摄影倍率 (image magnification)——被摄体的大小与通过镜头实际拍得的影像的大小之比。摄影倍率 m按下列公式计算:
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m = B/A = b/a,m = f/(a-f) 或 m = (b-f)/f文章源自:https://www.tuzier.com/兔子摄影网-https://www.tuzier.com/103.html
式中:文章源自:https://www.tuzier.com/兔子摄影网-https://www.tuzier.com/103.html
A:被摄体的大小文章源自:https://www.tuzier.com/兔子摄影网-https://www.tuzier.com/103.html
B:影像的大小文章源自:https://www.tuzier.com/兔子摄影网-https://www.tuzier.com/103.html
a:被摄体距离文章源自:https://www.tuzier.com/兔子摄影网-https://www.tuzier.com/103.html
b:像面距离文章源自:https://www.tuzier.com/兔子摄影网-https://www.tuzier.com/103.html
f:焦距文章源自:https://www.tuzier.com/兔子摄影网-https://www.tuzier.com/103.html 文章源自:https://www.tuzier.com/兔子摄影网-https://www.tuzier.com/103.html