Calculate depth of field, near and far focus limits and hyperfocal distance from focal length, aperture, distance and sensor size.
对焦距离需大于焦距。
| Item | Formula / Rule | Source / Standard |
|---|---|---|
| Depth formula | Near = Hs ÷ (H + s − f) and far = Hs ÷ (H − s + f) with H the hyperfocal distance | Kingslake, Optics in Photography, SPIE Press, 1992 |
| Focal versus field depth | Focal depth sits at the image plane in CoC terms, while depth of field is measured in object space | ISO 12231:2012 Photography — Vocabulary |
| Magnification effect | Higher magnification shallows depth sharply, and macro work gains little per stop | Kingslake, Optics in Photography, SPIE Press, 1992 |
摄影参数、曝光与画质的快速参考。