Re: 24-70 II near MFD focus shift f/2.8 vs stopped down?
skibum5 wrote:
Was trying some close-in, shots of ornaments on the tree and for some I was using LV 10x zoom AF and yet shot after shot was a mess with the AF seeming off despite looking perfect in LV. It was dark so LV had lens at f/2.8 but my shots were maybe f/4-f/5. I held in the DOF button to focus at actually shooting aperture and noticed that the focus placement suddenly jumped to a different spot. Focusing with DOF button held down, the final shots had focus where it was intended. It actually made a tremendous real world difference.
So just something to watch out for.
yah, any focal plane that flip its wings while stopping down will do that to you...so does most fast lenses. It dies it regardless subject distance...distance dof might fool our eyes but the effects is always there.
Dec 28, 2012 at 10:26 PM
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