Ultra-Fast Lenses

Challenge #9 in the Technology Enabling Art series. Hosted by ProfHankD.
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Very large aperture lenses, those with an f/number of f/1.2 or less, don't just let a lot of light in. They also have vanishingly small depth-of-focus. That makes them hard to focus, but often results in beautifully smooth out-of-focus portions of the scene (i.e., very pleasing bokeh). This challenge is for photos shot using a taking aperture marked as f/1.2 or faster. Note that not all ultra-fast lenses are expensive; used special-purpose lenses as fast as f/0.75 can be adapted for macro photography on most DSLRs and EVILs: http://www.instructables.com/id/Using-Ultra-Fast-Lenses-on-DSLR-Cameras/
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Bailey
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My dog Bailey. With a resigned look in his eyes, poses for yet another photograph :)
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Submitted: Friday, 24th September, 2010 08:26 (GMT)
Taken: Thursday, 23rd September, 2010
Focal length: 85 mm
Shutter speed: 1/320 sec
Aperture: F1.2
ISO: 800
Notes: As a personal preference, when using this lens, I always try to shoot at least 2-3 times faster than the minimum shutter speed rule dictates. At f1.2, the slightest movement will punish your shot!
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