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Back Focus
By Michael Bravin
One of the
areas of digital production that often bewilders crews coming from the
film world is back focus. "Why do you have to adjust the back of the
lens in the field?" they ask. Back focus on a digital camera/lens
system is similar to flange focal distance on a film camera/lens
system. The main difference is that flange focal distance and depth on
a film camera usually are adjusted in the shop, and once set, should
not have to be changed again unless something has changed drastically,
like the camera was dropped or the lens bounced on the ground.
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Camera lens
styles
Mar 1, 2007
12:00 PM
By David Austerberry
Film-style shooting,
whether for a full-length movie or television drama, carries a
different set of needs than employed for sports and other live news
productions. Specifically, you need the right lens that matches your
shooting style and your camera.
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