dandi Loc: near Seattle, WA

Focus shift is a displacement of the sharp plane of focus when the lens is focused wide open, but the image is made with the lens stopped down.

http://photographylife.com/what-is-focus-shift

http://diglloyd.com/articles/Focus/FocusShift.html

http://www.youtube.com/watch?v=2aTKSjMIFyk

Did you know about “Focus shift”? Did you experience it in your shooting?
Is it only concern when shooting very fast (f/1.2 or f/1.4) lens? Can it be responsible for some softness in image? Thanks for sharing your thoughts.

Dsk82

I have experienced focus shift on nikkor 50mm f1.8 prime. When i af fine tune wide open at f1.8 i can get tack sharp result. If i stop down to f5.6 then focus shifts backwards a bit. At f5.6 o hav to fine tune again. How do others deal with this?