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photo_sail: (pic#11189935)

Относительное отверстие - отношение входного зрачка к заднему фокусному расстоянию

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Created on 2017-04-04 11:55:08 (#2832496), last updated 2017-06-04 (7 weeks ago)

349 comments received, 7 comments posted

202 Journal Entries, 145 Tags, 0 Memories, 2 Icons

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Name:photo_sail
Birthdate:Nov 5
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