Syria opposition leader rejects Moscow invitation

ALEPPO PROVINCE, Syria/BEIRUT (Reuters) - Syria's opposition leader has rejected an invitation from Russia for peace talks, dealing another blow to international hopes that diplomacy can be resurrected to end a 21-month civil war.

Russia, President Bashar al-Assad's main international protector, said on Friday it had sent an invitation for a visit to Moaz Alkhatib, whose six-week-old National Coalition opposition group has been recognized by most Western and Arab states as the legitimate voice of the Syrian people.

But in an interview on Al Jazeera television, Alkhatib said he had already ruled out such a trip and wanted an apology from Moscow for its support for Assad.

"We have clearly said we will not go to Moscow. We could meet in an Arab country if there was a clear agenda," he said.

"Now we also want an apology from (Russian Foreign Minister Sergei) Lavrov because all this time he said that the people will decide their destiny, without foreign intervention. Russia is intervening and meanwhile all these massacres of the Syrian people have happened, treated as if they were a picnic."

"If we don't represent the Syrian people, why do they invite us?" Alkhatib said. "And if we do represent the Syrian people why doesn't Russia respond and issue a clear condemnation of the barbarity of the regime and make a clear call for Assad to step down? This is the basic condition for any negotiations."

With the rebels advancing steadily over the second half of 2012, diplomats have been searching for months for signs that Moscow's willingness to protect Assad is faltering.

So far Russia has stuck to its position that rebels must negotiate with Assad's government, which has ruled since his father seized power in a coup 42 years ago.

"I think a realistic and detailed assessment of the situation inside Syria will prompt reasonable opposition members to seek ways to start a political dialogue," Lavrov said on Friday.

That was immediately dismissed by the opposition: "The coalition is ready for political talks with anyone ... but it will not negotiate with the Assad regime," spokesman Walid al-Bunni told Reuters. "Everything can happen after the Assad regime and all its foundations have gone. After that we can sit down with all Syrians to set out the future."

BRAHIMI TO MOSCOW

Russia says it is behind the efforts of U.N. mediator Lakhdar Brahimi, fresh from a five-day trip to Damascus where he met Assad. Brahimi, due in Moscow for talks on Saturday, is touting a months-old peace plan for a transitional government.

That U.N. plan was long seen as a dead letter, foundering from the outset over the question of whether the transitional body would include Assad or his allies. Brahimi's predecessor, Kofi Annan, quit in frustration shortly after negotiating it.

But with rebels having seized control of large sections of the country in recent months, Russia and the United States have been working with Brahimi to resurrect the plan as the only internationally recognized diplomatic negotiating track.

Russia's Middle East envoy, Deputy Foreign Minister Mikhail Bogdanov, who announced the invitation to Alkhatib, said further talks were scheduled between the "three B's" - himself, Brahimi and U.S. Undersecretary of State William Burns.

Speaking in Damascus on Thursday, Brahimi called for a transitional government with "all the powers of the state", a phrase interpreted by the opposition as potentially signaling tolerance of Assad remaining in some ceremonial role.

But such a plan is anathema to the surging rebels, who now believe they can drive Assad out with a military victory, despite long being outgunned by his forces.

"We do not agree at all with Brahimi's initiative. We do not agree with anything Brahimi says," Colonel Abdel-Jabbar Oqaidi, who heads the rebels' military council in Aleppo province, told reporters at his headquarters there.

Oqaidi said the rebels want Assad and his allies tried in Syria for crimes. Assad himself says he will stay on and fight to the death if necessary.

In the rebel-held town of Kafranbel, demonstrators held up cartoons showing Brahimi speaking to a news conference with toilet bowls in front of him, in place of microphones. Banners denounced the U.N. envoy with obscenities in English.

DIPLOMATS IMPOTENT

Diplomacy has largely been irrelevant to the conflict so far, with Western states ruling out military intervention like the NATO bombing that helped topple Libya's Muammar Gaddafi last year, and Russia and China blocking U.N. action against Assad.

Meanwhile, the fighting has grown fiercer and more sectarian, with rebels mainly from the Sunni Muslim majority battling Assad's government and allied militia dominated by his Alawite sect, an offshoot of Shi'ite Islam.

Still, Western diplomats have repeatedly touted signs of a change in policy from Russia, which they hope could prove decisive, much as Moscow's withdrawal of support for Serbian leader Slobodan Milosevic heralded his downfall a decade ago.

Bogdanov said earlier this month that Assad's forces were losing ground and rebels might win the war, but Russia has since rowed back, with Lavrov last week reiterating Moscow's position that neither side could win through force.

Still, some Moscow-based analysts see the Kremlin coming to accept it must adapt to the possibility of rebel victory.

"As the situation changes on the battlefield, more incentives emerge for seeking a way to stop the military action and move to a phase of political regulation," said Dmitry Trenin, director of the Carnegie Moscow Center.

Meanwhile, on the ground the bloodshed that has killed some 44,000 people continues unabated. According to the pro-opposition Syrian Observatory for Human Rights, a monitoring group based in Britain, 150 people were killed on Thursday, a typical toll as fighting has escalated in recent months.

Government war planes bombarded the town of Assal al-Ward in the Qalamoun district of Damascus province for the first time, killing one person and wounding dozens, the observatory said.

In Aleppo, Syria's northern commercial hub, clashes took place between rebel fighters and army forces around an air force intelligence building in the Zahra quarter, a neighborhood that has been surrounded by rebels for weeks.

(Additional reporting by Omar Fahmy in Cairo, Dominic Evans in Beirut and Steve Gutterman and Alissa de Carbonnel in Moscow; Writing by Peter Graff; Editing by Giles Elgood)

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Obama, top lawmakers meet on cliff edge

WASHINGTON: President Barack Obama Friday sought a late deal to stop the US economy tumbling off a "fiscal cliff" next week, gathering top congressional leaders for crunch White House talks.

Obama is trying to broker a deal to avert huge tax increases and spending cuts due to come into force as the year turns on Tuesday, as dysfunctional Washington reluctantly works through a disrupted holiday period.

A sense of building crisis was exacerbated by sliding stock prices on Wall Street as the political stalemate threatened a set off chain reactions that could drive America back into recession and rattle the global economy.

Obama met top Republicans, House Speaker John Boehner and Senate Minority Leader Mitch McConnell, and top Democrats, Senate Majority Leader Harry Reid and House Minority Leader Nancy Pelosi, in the Oval Office.

But with time so short, the last-ditch talks to head off a $500 billion fiscal time bomb due to detonate on January 1 appeared unlikely to forge a permanent solution on a long-term deficit reduction deal.

Instead, Obama, now banking on a stopgap solution after talks on a grand debt and tax bargain with Boehner failed, wants taxes on American families earning more than $250,000 a year to go up but to spare the middle class.

Obama will not make a new offer to Republicans, a source familiar with the meeting said, adding that the president would ask for an extension of expiring unemployment insurance for two million people.

He will also tell Republicans that if they cannot come up with a counter-proposal to avert the fiscal cliff they must allow his plan to come up for a vote in both chambers of Congress, the source said.

Such a scenario would leave Republicans in a tough political spot as if they refuse, it would be easy for the White House to blame them for the economy toppling over the cliff.

It is not clear whether the Obama plan would avert massive spending cuts due to come into force on January 1, and does not deal with his request to raise the $16 trillion ceiling on government borrowing.

Republicans want to extend George W. Bush-era tax cuts due to expire on Tuesday for everyone and accuse the president of failing to offer meaningful spending cuts in a bargain in return for them agreeing to raise revenues.

Some top lawmakers clung to hope.

"Sometimes, it's darkest before the dawn," said Democratic Senator Chuck Schumer on NBC, saying McConnell's role could be a catalyst for action.

But Republican Senator Bob Corker complained Obama and Democrats in Congress had balked at cutting spending on key social programs weighing on the budget, and inflating the deficit, accusing them of a "total dereliction of duty."

"We're going to end up with a small, kick-the-can-down-the-road bill that creates another fiscal cliff to deal with this fiscal cliff. How irresponsible is that?" Corker told reporters.

Retiring Democratic Senator Ben Nelson warned: "If this meeting is not successful in achieving a proposal, I think you need to get a parachute."

Obama broke off his vacation in Hawaii in search of a last-minute deal and Boehner called the House back to work on Sunday.

The president's scaled-down solution calls for an extension of tax cuts for people earning less than $250,000, and an extension of unemployment benefits before a wider effort to trim the deficit next year.

But it is doubtful the package could pass the House as restive conservatives last week rebuked Boehner by rejecting his fallback plan which would have raised taxes on people earning $1 million.

While each side must for the sake of appearances be seen to be seeking a deal, the easiest way out of the mess might be to allow the economy to go over the cliff, but to fix the problem in the first few days of next year.

In that scenario, Republicans, who are philosophically opposed to raising taxes, could back a bill to lower the newly raised rates on almost all Americans, thus sidestepping the stigma of raising taxes.

Recent polls show a majority of Americans back Obama's handling of the crisis, and would blame Republicans for a failure to fix it, so the president could get a short-term political boost from an early deal next year.

Should the stalemate linger however, the crisis would cloud the early months of Obama's second term, would dent his popularity and could detract from his key political goals like immigration reform and gun control.

-AFP/ac

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LG bringing several sizes of high res displays to CES

As a person what reviews both monitors and
tablets, display quality is of particular interest to me. And early next month at
CES 2013, LG intends to give me a reason to be excited. However, the company has not confirmed that the following display technologies will be attached to actual products; only that differently-sized, impressively-specced displays will be showcased. And by "showcased" I mean shown at a "private" booth at the show. However, I'm not yet sure exactly what that means.

LG will demo several Ultra High Definition (UHD) TVs at three different sizes: 84-inch, 65-inch, and 55-inch. All sporting resolutions of 3,840x2,160 and featuring the company's passive 3D technology.

Possibly the most exciting demo (at least for me) will be a 30-inch, 4,096x2,160 resolution monitor. Extreme definition monitors have previously topped out at 2,560x1,600 and LG says its new display will appeal to medical professionals, and designers, but I'm personally more interested in how video games running at its native resolution will look on it.

On the mobile end, LG will demo a Full HD (at least 1,920x1,080 resolution), 5.5-inch smartphone display with a 403 ppi and a 7-inch tablet display sporting a 1,920x1,200 resolution and 324 ppi. It'll also show a 12.9-inch, 2,560x1,700 resolution laptop panel, which would deliver a higher ppi than the Macbook Pro with Retina display.

Thin bezels will also get some love. We'll see a narrow bezel monitor with a 23.8-inch screen and a 13.3-inch laptop panel with a bezel measuring less than 2mm (0.07-inch) thick, and a 4.7-inch display with a 1mm (0.03-inch) bezel.

LG will also show a 3.5kg (7.7 pound), 4mm (0.15-inch) thick 55-inch OLED WRGB TV display.

Like I previously mentioned, these will all purportedly be displayed in a private booth, so, hopefully we'll actually get a chance to get some up close and personal time with them.

(Via TV Engadget)

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Free gun training offered to 200 Utah teachers

(CBS/AP) SALT LAKE CITY - Gun rights advocates plan to offer gun training for 200 Utah teachers Thursday, saying that classroom teachers could stop school shootings by carrying concealed weapons.

The Utah Shooting Sports Council said it would waive its $50 fee for concealed-weapons training for the teachers. Instruction featuring plastic guns is set to begin at noon Thursday inside a conference room at Maverick Center, a hockey arena in the Salt Lake City suburb of West Valley.

It's an idea gaining traction in the aftermath of the Connecticut school shooting. In Ohio, the Buckeye Firearms Association said it was launching a test program in tactical firearms training for 24 teachers initially.

Educators say Utah legislators left them with no choice but to accept some guns in schools. State law forbids schools, districts or college campuses from trying to impose their own gun restrictions. Utah is among few states that let people carry licensed concealed weapons into public schools without exception, the National Conference of State Legislatures said in a 2012 compendium of state gun laws.

"Schools are some of the safest places in the world, but I think teachers understand that something has changed -- the sanctity of schools has changed," said Clark Aposhian, chairman of the Utah Shooting Sports Council, the state's leading gun lobby. "Mass shootings may still be rare, but that doesn't help you when the monster comes in."

Gun-rights advocates say teachers can act more quickly than law enforcement in the critical first few minutes to protect children from the kind of shooting that left 20 children and six adults dead Dec. 14 at Sandy Hook Elementary School in Newtown, Conn. In Arizona, Attorney General Tom Horne has proposed amending state law to allow one educator in each school to carry a gun.

"We're not suggesting that teachers roam the halls" for an armed intruder, Aposhian said. "They should lock down the classroom. But a gun is one more option if the shooter" breaks into a classroom.

He said a major emphasis of the safety training is that people facing deadly threats should announce they have a gun and retreat or take cover before trying to shoot.

Utah educators say they would ban guns if they could and have no way of knowing how many teachers are armed. Gun-rights advocates estimate that 1 percent of Utah teachers or 240 are licensed to carry concealed weapons. It's not known how many pack guns at school.

"It's a terrible idea," said Carol Lear, a chief lawyer for the Utah Office of Education, who argues teachers could be overpowered for their guns or misfire or cause an accidental shooting. "It's a horrible, terrible, no-good, rotten idea."

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Utah Teachers Flock to Gun Training

The perception of schools as sanctuaries from violence has been "blown up" by recent events and some believe it's time for educators to literally take the situation into their own hands and carry guns.

"We've had this unwritten code, even among criminals, that schools are off limits. Those are our kids. You don't mess with that," Utah Shooting Sports Council (USSC) Chairman Clark Aposhian told ABCNews.com today.

"That perception has been blown away now," he said. "It's been shattered and if there's one thing that parents across the country are united on, it's that they are committed to and serious about protecting their kids."

Aposhian spoke shortly before opening a weapons training class for teachers and school employees that drew more than 200 Utah educators organized by the USSC, a leading gun lobby group that believes that teachers should be able to fight back when faced with an armed intruder.

"One firearm in the hands of one teacher could have made the difference at Sandy Hook or Columbine, but they weren't allowed to carry in those schools," Aposhian said.

The USSC is waiving its normal $50 training fee today for teachers who wish to attend. Aposhian said the 200 person course was filled to capacity and said he plans on holding another session for people he may have to turn away today.

INFOGRAPHIC: Gun in America: By The Numbers

"We trust these teachers to be with our kids for 8 to 10 hours a day every day," Aposhian said. "I don't think it's a far reach to think that we could think that they would act responsibly and with decorum in protecting their own lives and the lives of the kids under their care."

Gun Owners Give Back: LA Residents Return Guns After Newtown Tragedy Watch Video

The idea of armed teachers has been part of a fiery debate on gun control following the rampage at Connecticut's Sandy Hook Elementary School that left 20 children and six adults dead on Dec. 14.

Utah is one of only a handful of states, including Oregon, Hawaii and New Hampshire, that allow people to carry licensed concealed weapons into public schools. It is not known how many Utah teachers carry guns in public schools because the records are not public.

But Aposhian said that he tells detractors that Utah has not had any school shootings or accidental shootings in the approximately 12 years the law has been in effect.

In Ohio, the Buckeye Firearms Association is launching a pilot armed teacher training program in which 24 teachers will be selected to attend a three-day training class.

Arizona's Attorney General Tom Horne has proposed a state law amendment that would allow one educator in each school to carry a gun.

During today's six-hour training session, the educators will be taught about gun safety, loading and unloading, manipulating the firearm, how to clear malfunctions, use of force laws and state and federal firearm laws.

The training sessions normally draw about 15 to 20 people, Aposhian said, but many of the teachers who have signed up for today have expressed strong feelings about attending the class.

"I think it runs the gamut from passive desire to get a permit because they thought about it here and there to a fervor given the recent events," Aposhian said. "Perhaps they've had an epiphany of sorts and realized that that sanctuary they work in, or at least the perceived sanctuary, isn't all that safe."

The Utah State Board of Education Chair Debra Roberts released the following statement today on the matter:

"The Utah State Board of Education expresses sympathy to all involved in the recent school shooting in Connecticut. In the face of this terrible tragedy, as schools move forward in taking measures to ensure the safety of students and school personnel, we urge caution and thoughtful consideration."

The statement noted that its schools have emergency plans to handle such situations.

Carol Lear, the board's director of school law and legislation, was more blunt about Aposhian's gun training, telling the Associated Press, "It's a terrible idea...It's a horrible, no-good, rotten idea."

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Russia's Putin signals he will sign U.S. adoption ban

MOSCOW (Reuters) - President Vladimir Putin signaled on Thursday he would sign into law a bill barring Americans from adopting Russian children and sought to forestall criticism of the move by promising measures to better care for his country's orphans.

In televised comments, Putin tried to appeal to people's patriotism by suggesting that strong and responsible countries should take care of their own and lent his support to a bill that has further strained U.S.-Russia relations.

"There are probably many places in the world where living standards are higher than ours. So what, are we going to send all our children there? Maybe we should move there ourselves?" he said, with sarcasm.

Parliament gave its final approval on Wednesday to the bill, which would also introduce other measures in retaliation for new U.S. legislation which is designed to punish Russians accused of human rights violations.

For it to become law Putin needs to sign it.

"So far I see no reason not to sign it, although I have to review the final text and weigh everything," Putin said at a meeting of federal and regional officials that was shown live on the state's 24-hour news channel.

"I intend to sign not only the law ... but also a presidential decree that will modify the support mechanisms for orphaned children ... especially those who are in a difficult situation, by that I mean in poor health," Putin said.

Critics of the bill say the Russian authorities are playing political games with the lives of children, while the U.S. State Department repeated its "deep concern" over the measure.

"Since 1992 American families have welcomed more than 60,000 Russian children into their homes, and it is misguided to link the fate of children to unrelated political considerations," State Department spokesman Patrick Ventrell said in a statement.

Ventrell added that the United States was troubled by provisions in the bill that would restrict the ability of Russian civil society organizations to work with U.S. partners.

Children in Russia's crowded and troubled orphanage system - particularly those with serious illnesses or disabilities - will have less of a chance of finding homes, and of even surviving, if it becomes law, child rights advocates say.

They point to people like Jessica Long, who was given up shortly after birth by her parents in Siberia but was raised by adoptive parents in the United States and became a Paralympic swimming champion.

However, the Russian authorities point to the deaths of 19 Russian-born children adopted by American parents in the past decade, and lawmakers named the bill after a boy who died of heat stroke in Virginia after his adoptive father left him locked in a car for hours.

Putin reiterated Russian complaints that U.S. courts have been too lenient on parents in such cases, saying Russia has inadequate access to Russian-born children in the United States despite a bilateral agreement that entered into force on November 1.

NATIONAL IDENTITY

But Putin, who began a new six-year term in May and has searched for ways to unite the country during 13 years in power, suggested there were deeper motives for such a ban.

"For centuries, neither spiritual nor state leaders sent anyone abroad," he said, indicating he was not speaking specifically about Russia but about many societies.

"They always fight for their national identities - they gather themselves together in a fist, they fight for their language, culture," he said.

The bid to ban American adoptions plays on sensitivity in Russia about adoptions by foreigners, which skyrocketed as the social safety net unraveled with the 1991 Soviet collapse.

Families from the United States adopt more Russian children than those of any other country.

Putin had earlier described the Russian bill as an emotional but appropriate response to the Magnitsky Act, legislation signed by President Barack Obama this month as part of a law granting Russia "permanent normal trade relations" (PNTR) status.

The U.S. law imposes visa bans and asset freezes on Russians accused of human rights violations, including those linked to the death in a Moscow jail of Sergei Magnitsky, an anti-graft lawyer, in 2009.

The Russian bill would impose similar measures against Americans accused of violating the rights of Russian abroad and outlaw some U.S.-funded non-governmental groups.

(Reporting By Alexei Anishchuk; additional reporting by Andrew Quinn in Washington; Writing by Alissa de Carbonnel and Steve Gutterman; Editing by Andrew Osborn and Doina Chiacu)

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Oil prices decline on 'fiscal cliff' deal doubts

NEW YORK: Oil prices declined Thursday amid doubts that an 11th-hour deal on the "fiscal cliff" crisis could be reached by a rapidly approaching end-of-year deadline.

New York's main contract, West Texas Intermediate (WTI) for February delivery, slipped 11 cents to settle at $90.87 a barrel.

Brent North Sea crude for February delivery dipped 27 cents to $110.80 a barrel in London trade.

With the clock ticking, the White House and Republican lawmakers have yet to reach a deal to keep the United States from falling off the so-called fiscal cliff, a combination of steep tax hikes and drastic spending cuts set to kick in next month.

President Barack Obama cut short his family Christmas break in Hawaii to return to Washington in a last-ditch attempt at reaching a compromise.

But the situation remained tense, with Senate Majority Leader Harry Reid, a Democrat, saying Thursday "it looks like" the US economy will hurtle over the fiscal cliff because House Speaker John Boehner and Republican Minority Leader Mitch McConnell were stalling.

Crude oil prices were "being taken down on what appears to be the growing eventuality that the US is going to go over the fiscal cliff," said analyst John Kilduff of Again Capital.

There was "no doubt that the tax hikes and the spending cuts that will roll automatically will be a real drag on the economy for the us," he added.

Experts warn that going over the "fiscal cliff" could take the United States back into recession. And that could hurt oil demand in the world's biggest consumer of crude.

-AFP/ac

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Make the resolution: try a new lens for your camera

Want to experiment? Lensbaby Spark is a cheap special-effects lens for Nikon and Canon mount dSLRs.

The most popular reason nonprofessionals buy dSLRs or other types of interchangeable-lens cameras is because they want better photos or faster performance than a point-and-shoot can deliver; the power of manual controls and interchangeable lenses seem to be a secondary concern. Nevertheless, I'm still routinely surprised when someone hands me his dSLR and it's set to auto and equipped with a standard kit lens.

The best (and cheapest) way to advance your photography is to switch out of auto; here's a map for venturing into that new territory. But the next best -- and not-so-cheap -- way to inject some new life into your photography is to try a new lens. (Know nothing about lenses? Jump to Basic terminology)

There are a variety of reasons to invest in a second or third lens -- if you're up to your third, chances are you don't need any encouragement from me. The first, and possibly most compelling, is that you simply can't get the shots you want with the lens you have, usually because most kit lenses have a limited telephoto range. On the flip side, you might be routinely frustrated by the inability to get everything you want in the photo, which requires a shorter focal length. Another reason to expand your options: better low-light photography. A lens with a maximum aperture wider than the standard f3.5 of most kit lenses allows for more light so that you the camera doesn't have to boost the ISO sensitivity into the noisy range or lower the shutter speed to the point where camera shake becomes a problem. And you can't usually maintain even that maximum aperture as you zoom out. A faster lens also delivers a more attractive, out-of-focus background with less work (though you can achieve the effect with slow lenses as well). If you're shooting more video, you might want a lens that's easier to manually focus or that provides quieter autofocus. Or you might simply want to climb out of a photography rut.

Trying a new lens or doesn't necessarily mean a huge cash outlay; lens rental services like LensRentals.com and LensProToGo.com have become quite popular, and it's a terrific, cost-effective way to see what it's like to shoot with a great pro lens that you normally wouldn't have access to or to buy refurbished. For example, you can rent a $1,700 Canon 100-400 f4.5-5.6L IS lens from LensProTogo for two weeks for just $168.

If you're looking to extend your zoom range, then the obvious choice is to bracket your kit lens with complementary wide angle and/or telephoto zoom. The most popular second lens tends to be a telephoto zoom with a focal length that starts at the end of the range of the typical kit lens; for example, 55-200mm for APS-C cameras or 75-300mm for MFT.

However, I've found a nice, fast prime is the best way to shake things up. Primes -- fixed focal-length lenses -- force you to think differently about framing a scene. Zooms provide flexibility when you're traveling because they're a compact way of covering a lot of territory, but primes expand your vision: since they don't have to be adequate at a lot of different focal lengths, they tend to be sharper at their designated focal length than the equivalent in a zoom, even the not-so-good ones. Furthermore, you can find a fast prime like a 35mm f2 or 50mm f1.8 for a lot less money than a fast zoom, and you get access to wide apertures that aren't possible on your kit lens. You'll immediately notice a difference in the quality of your photos. One warning, though: once you've shot with a fast lens, even a mediocre one, it's tough to go back to the slow zoom.

• Aperture: The opening that determines the amount of light to let through, as enumerated by an f-stop, such as f2.0. (It's referred to as an iris in video.) Lower f-stop numbers denote wider apertures. A camera with a wide aperture for much of the focal range is referred to as fast; narrow-aperture lenses are called slow. Apertures are formed by a series of blades that open and close; the more blades, the rounder the opening (seven or more is best). The downside: The faster the lens, the harder it can be to autofocus.


• Depth-of-field (DOF): The proportion of the image in front of and behind the subject that is sharp. When a photo has lots of background blur it displays shallow DOF. All things being equal -- notably sensor size and distance from subject -- the lower the f-number the shallower the DOF.


• Bokeh: The shape of out-of-focus highlights; rounder and smoother is usually considered better, unless you're going for an effect. Cheaper lenses are more likely to produce bokeh with concentric rings called Airy disks or rings (more detail here, for the mathematically inclined), though physics dictates that every lens has a point at which they'll occur.


• Focal length: Technically, the physical distance between the beginning of the optical path and the imaging plane (in this case, the sensor). However, the more informative spec is angle of view -- the degree of the scene that the lens covers -- which is dependent upon the size of the imaging plane. So as a convention everyone's adopted a 35mm frame of film as a standard size on which to base angle of view, and translates the physical focal length into the the focal length that produces the equivalent angle of view on a 35mm (full frame) camera by multiplying by a crop factor.
  
  • Ultrawide angle (less than 18mm) is good for very large scenes where lens distortion adds rather than detracts from the appeal.
  
  
  • Wide-angle (around 18mm to 30mm) is good for group shots, landscapes, and street photography
  
  
  • 
    Normal (about 30mm to 70mm) is good for portraits and snapshots
  
  
  • 
    Telephoto (about 70mm to 300mm) is good for portraits and sports
  
  
  • 
    Super telephoto (greater than 300mm) is good for sports, wildlife and stalking
  
  


• Lens mount: The place where a lens attaches to the camera. A lens must adhere to various specifications in order to be compatible with a camera -- the two most important specs that define a mount are size (so that they can match physically) and connectors (so that it can talk to the camera). Most mounts have third-party adapters that allow you to attach an incompatible lens, though there are frequently trade-offs like no autofocus, inability to work with the electronic metering system, or vignetting (darkness around the edges of the frame).

Manufacturer	Mount	Sensor size/crop factor
Canon	EF EF-S EF-M	full-frame/1.0x APS-C/1.6x APS-C mirrorless/1.6x
Nikon	FX DX CX	full-frame/1.0x APS-C/1.5x CX mirrorless/2.7x
Sony	A E	Both full frame/1.0x and APS-C/1.5x Mirrorless APS-C/1.5x
Pentax	K	Both full frame/1.0x and APS-C/1.5x
Olympus and Panasonic	Micro Four Thirds (MFT)	MFT/2.0x
Samsung	NX	APS-C/1.5x

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Fmr. President Bush battling "stubborn" fever

A "stubborn" fever that kept former President George H.W. Bush in a hospital over Christmas has gotten worse, and doctors have put him on a liquids-only diet, his spokesman said Wednesday, describing Bush's condition as guarded to CBS News.

Jim McGrath, Bush's spokesman in Houston, had said earlier in the day that the fever had gone away, but he later corrected himself.

"It's an elevated fever, so it's actually gone up in the last day or two," McGrath told The Associated Press. "It's a stubborn fever that won't go away."

Doctors at Methodist Hospital in Houston have run tests and are treating the fever with Tylenol, but they still haven't nailed down a cause, McGrath said. Doctors also have put Bush on a liquid diet, though McGrath could not say why.

The bronchitis-like cough that initially brought Bush to the hospital on Nov. 23 has improved, McGrath said. The 88-year-old is now coughing about once a day, he said.

Bush was visited on Christmas by his wife, Barbara, his son, Neil, and Neil's wife, Maria, and a grandson, McGrath said. Bush's daughter, Dorothy, will arrive Wednesday in Houston from Bethesda, Md. The 41st president has also been visited twice by his sons, George W. Bush, the 43rd president, and Jeb Bush, former governor of Florida.

Bush and his wife live in Houston during the winter and spend their summers at a home in Kennebunkport, Maine.

The former president was a naval aviator in World War II - at one point the youngest in the Navy - and was shot down over the Pacific. He achieved notoriety in retirement for skydiving on at least three of his birthdays since leaving the White House in 1992.

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Weather Death Toll Up to 6 as Storm Churns North

A killer Christmas storm is churning its way north leaving hundreds of thousands without power and snarling travel plans for people trying to get home after the holiday.

Six people have died, mostly in weather related car crashes, as the South was hammered by as many as 34 tornadoes and a lethal coating of sleet and snow that spread from the South into the Midwest.

Over 280,000 customers are without across the South today with 100,000 without power in Little Rock, Ark. alone.

The wild weather isn't over. Eighteen states from Tennessee to Maine are under winter storm warnings, blizzard warnings and advisories. Between one and two feet of snow is expected from Indianapolis to Cleveland to Syracuse, N.Y. and into Maine.

The number of flight cancellations nationwide is growing by the hour on one of the busiest travel days of the holiday season. But by 2 p.m. more than 1,000 flights were canceled, according to FlightAware.com.

"Traveling will definitely be affected as people go home for the holidays," Bob Oravec, lead forecaster for the National Weather Service, told ABC News. "Anywhere from the Mississippi Valley into the Ohio Valley and the Northeast, there's definitely going to be travel issues as we have heavy snow and some very high winds."

Flights were disrupted in traffic hubs like Indianapolis International Airport because of heavy snowfall as well as Dallas/Fort Worth which was hit with five inches of snow on Christmas, a rarity for the city.

PHOTOS: Christmas Storms

Joe Harpring/The Republic/AP Photo

Cancellations and delays are expected to ripple into the Northeast today where high winds, flooding and more than a foot of snow in some areas is expected.

Heavy winds could further complicate matters for travelers. According to Flightaware.com, fliers are experiencing delays up to an hour in Baltimore, Philadelphia, New York City and Washington, D.C.

Some airlines are issuing flexible travel policies for travelers holding airline tickets today and tomorrow. Delta Airlines is allowing travelers to change their flights through Jan. 2 with no penalty. United Airlines has enacted a similar policy, as has Southwest. Policies vary slightly from airline to airline, travelers should check their carrier's web site for specifics. JetBlue, which has a major presence in New York, has not yet issued a policy but warned travelers via its web site to be prepared for delays.

Wild Holiday Weather

Severe weather on Christmas day spawned 34 tornado reports from Texas to Alabama.

In Mobile, Ala., a wide funnel cloud was barreled across the city as lightning flashed inside like giant Christmas ornaments.

The punishing winds mangled Mobile's graceful ante-bellum homes, and today, dazed residents are picking through debris while rescue crews search for people trapped in the rubble.

Teresa Mason told ABC News that she and her boyfriend panicked when they saw the tornado heading toward them in Stone County, in southern Mississippi, but she says they were actually saved when a tree fell onto the truck.

"[We] got in the truck and made it out there to the road. And that's when the tornado was over us. And it started jerking us and spinning us, "she said."This tree got us in the truck and kept us from being sucked up into the tornado."

The last time a number of tornadoes hit the Gulf Coast area around Christmas Day was in 2009, when 22 tornadoes struck on Christmas Eve morning, National Weather Service spokesman Chris Vaccaro told ABC News.

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