免费 · 计算与转换
裁切系数.
把焦距和光圈换算为全画幅等效值。
Equivalent f-number compares depth of field. Exposure stays at the marked aperture. Local arithmetic only. This is a quantity or geometry estimate, not a code check and not a substitute for a licensed professional.
- Equivalent focal length
- 75 mm
- Equivalent f-number
- 4.2
Equivalent focal length is the lens focal length times the crop factor. The equivalent f-number compares depth of field; the exposure stays at the marked aperture.
使用方法: 裁切系数
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英语技术说明
Equivalent f-number compares depth of field. Exposure stays at the marked aperture. Local arithmetic only. This is a quantity or geometry estimate, not a code check and not a substitute for a licensed professional.
Convert a focal length and an aperture to full-frame equivalents with a crop factor. Equivalent f-number compares depth of field. Exposure stays at the marked aperture. 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 f/2.8 lens on a 1.5× sensor.