同样焦距, 光圈，景深在43上其实反而略小。# PhotoGear - 摄影器材
G*Y
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刚才那DOF Master算了一下。因为43的circle of confusion略小。
注意是同样焦距，不是同样等效焦距。
比如同一个200mm毫米的镜头，射到F/8，目标距离20 ft，
在43上，
Subject distance 20 ft
Depth of field
Near limit 19.7 ft
Far limit 20.4 ft
Total 0.71 ft
In front of subject 0.35 ft (49%)
Behind subject 0.36 ft (51%)
Hyperfocal distance 1094.3 ft
Circle of confusion 0.015 mm
在D700上，
Subject distance 20 ft
Depth of field
Near limit 19.3 ft
Far limit 20.7 ft
Total 1.42 ft
In front of subject 0.68 ft (48%)
Behind subject 0.73 ft (52%)
Hyperfocal distance 547.5 ft
Circle of confusion 0.03 mm
在D7000上,
Subject distance 20 ft
Depth of field
Near limit 19.5 ft
Far limit 20.5 ft
Total 0.94 ft
In front of subject 0.46 ft (49%)
Behind subject 0.48 ft (51%)
Hyperfocal distance 820.9 ft
Circle of confusion 0.02 mm
基本上可以粗略的认为，同一镜头，在不同机器上，DOF大概一样。但是等效焦距不一
样。
注意是同样焦距，不是同样等效焦距。
比如同一个200mm毫米的镜头，射到F/8，目标距离20 ft，
在43上，
Subject distance 20 ft
Depth of field
Near limit 19.7 ft
Far limit 20.4 ft
Total 0.71 ft
In front of subject 0.35 ft (49%)
Behind subject 0.36 ft (51%)
Hyperfocal distance 1094.3 ft
Circle of confusion 0.015 mm
在D700上，
Subject distance 20 ft
Depth of field
Near limit 19.3 ft
Far limit 20.7 ft
Total 1.42 ft
In front of subject 0.68 ft (48%)
Behind subject 0.73 ft (52%)
Hyperfocal distance 547.5 ft
Circle of confusion 0.03 mm
在D7000上,
Subject distance 20 ft
Depth of field
Near limit 19.5 ft
Far limit 20.5 ft
Total 0.94 ft
In front of subject 0.46 ft (49%)
Behind subject 0.48 ft (51%)
Hyperfocal distance 820.9 ft
Circle of confusion 0.02 mm
基本上可以粗略的认为，同一镜头，在不同机器上，DOF大概一样。但是等效焦距不一
样。
