ISO 517:1996 PDF
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Photography — Apertures and related properties pertaining to photographic lenses — Designations and measurements
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.
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| Edition | 1996 |
|---|---|
| Published Date | 1996 |
| Published By | International Standardization Organisation |
| Page Count | 8 |
