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Focal length + DOF

teefin1

TalkEmount Top Veteran
Joined
Sep 7, 2012
Messages
618
Am I correct in assuming that a longer focal length with a larger F number can possibly effect equal or shallower DOF to shorter focal length/smaller F number?

(I.e 50mm 1.8 v 85mm 2.8)
 

nianys

TalkEmount All-Pro
Joined
Aug 23, 2012
Messages
1,558
Location
France
It's taken me long to realize how much focal length has in fact MORE impact on compressing backgrounds and creating blur, than aperture itself. A 135/3.5 very easily totally erases backgrounds, sometimes more do than a 35/2, for instance. Distance to subject, and from subject to background, is also tremendously important.
 
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