Mitch Seavey crosses the finish line in Nome, Alaska, at 11:30PM, March 28, 2008, setting a new record time for the All Alaska Sweepstakes. Jeff King came in second, at 11:40PM. Lance Mackey took third arriving at 1:59AM on the 29th.
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Mitch Seavey crosses the finish line in Nome, Alaska, at 11:30PM, March 28, 2008, setting a new record time for the All Alaska Sweepstakes. Jeff King came in second, at 11:40PM. Lance Mackey took third arriving at 1:59AM on the 29th.
Posted by
Patrick
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12:38 AM
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Labels: Dog Mushing
Posted by
Patrick
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9:48 PM
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Labels: Dog Mushing
Posted by
Patrick
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10:21 AM
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Labels: Dog Mushing
Posted by
Patrick
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1:57 PM
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Labels: Dog Mushing
"These are interference fringes due to the parallel faces of the filter and to the narrow spectral emission at 5577 Angstroms in the aurora. That green, atomic oxygen emission line is the strongest emission in the aurora near our film and eye peak sensitivity, so it shows up first when there is any device in the optical path which sorts out the spectral emissions."Harry Manos, a physics teacher from California who gave a lecture on aurora photography (and consulted Charles Deehr for material review) describes it this way:
"A haze filter in front of the lens acts as a Fabry-Perot interferometer on the 1S auroral green emission line of oxygen, creating green concentric circles"So what does that mean exactly? This is a good interpretation: just take your filter off!
Posted by
Patrick
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1:54 PM
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Labels: Aurora borealis, Technique
Posted by
Patrick
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3:16 PM
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Posted by
Patrick
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2:17 PM
1 comments
Labels: Birds
In switching from the 1Ds Mark II to the Mark III, one should really read the camera manual. Now how many people actually do this? I glanced at it, but must admit that I feigned an entire read. Until, I ran into a few odd discoveries, which prompted further exploration. Most notably, was the reduced frame rate, about 2 frames a second even in the fast mode. It turns out that having the High ISO digital noise reduction turned on slows down the frame rate due to software processing for noise. With the Mark II, I left it on all the time and it did not seem to make a difference. Make sure to turn it off for maximum speed.
Additionally, with custom functions buried in 4 different categories, it is hard to remember what is where. A helpful feature of the Mark III lets you tag your most often used custom functions and register them to show up under the "My Menu settings". This can provide a much quicker access to custom functions that you change often, like LCD Brightness, Mirror lockup, etc.
Posted by
Patrick
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2:30 PM
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Labels: Camera and Lenses
Posted by
Patrick
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9:56 AM
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Labels: Dog Mushing, Travels
Posted by
Patrick
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4:29 PM
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Labels: Travels
Posted by
Patrick
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2:31 PM
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Labels: Landscapes
"Open North American Championship (ONAC) is the premiere sled dog sprint race in the world, attracting the best sprint mushers from the United States, Canada, Europe, and Japan. The three-day race is run every year in March from downtown Fairbanks, Alaska, with heats of 20 miles the first two days, and a grueling 30-mile heat on the final day. The ONAC is the oldest continuously run sled dog race of any kind in the world. First run in 1946, the 2008 race will be the 63rd running."
Posted by
Patrick
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3:28 PM
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Labels: Dog Mushing
Posted by
Patrick
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11:55 AM
1 comments
Labels: Publications
Posted by
Patrick
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4:44 PM
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One challenge with indoor photography is shooting under mixed lighting conditions. The camera, whether digital or film, tends to pick up color variations in light sources with a much more dramatic effect than is noticeable with the human eye. If there is just one light source, the photo can be white balanced to correct for any color cast. However, if there are multiple light sources, the photo can only be balanced for one type, and parts of the photo acquire a strong color cast.
In this example, The subjects were front lit with a tungsten balanced strobe, but top lit with very green mercury vapor lamps. Photoshops replace color command under the image/adjustments menu does a fine job at shifting the hue of just one color in a photo.
Posted by
Andrew
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4:11 PM
2
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Labels: Digital Technique
Posted by
Patrick
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2:12 PM
2
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Labels: Wildlife