免费 · 计算与转换
景深.
根据焦距和光圈计算超焦距以及近端和远端距离。
H = f² / (N × c) + f. Preset circles of confusion are conventional. Distances follow the optical axis. Local arithmetic only. This is a quantity or geometry estimate, not a code check and not a substitute for a licensed professional.
- Hyperfocal distance
- 29.811905 m
- Near distance
- 4.286988 m
- Far distance
- 5.997505 m
- Depth of field
- 1.710517 m
Hyperfocal distance H = f² / (N × c) + f, with f and c in millimetres. Near and far distances use that H. Circle-of-confusion presets are conventional values. Distances are along the optical axis.
使用方法: 景深
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英语技术说明
H = f² / (N × c) + f. Preset circles of confusion are conventional. Distances follow the optical axis. Local arithmetic only. This is a quantity or geometry estimate, not a code check and not a substitute for a licensed professional.
Calculate hyperfocal, near and far distances from focal length, aperture, distance and circle of confusion. H = f² / (N × c) + f. Preset circles of confusion are conventional. Distances follow the optical axis. Local arithmetic only. This is a quantity or geometry estimate, not a code check and not a substitute for a licensed professional.
A 50 mm lens at f/2.8 focused at 5 m on a full-frame circle of confusion.