Pertains to apertures and related properties of photographic lenses affecting the illuminance at the centre of the image. Does apply only to lenses focused on objects at infinity; that is, at least 50 times the focal length of the lens.
WITHDRAWN
ISO 517:1996
95.99
Withdrawal of Standard
10 mar 2008
Corrected by
ISO 517:1996/Cor 1:2006
PUBLISHED
ISO 517:2008
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