Bill Caulfeild-Browne
Well-known member
One of the latest features of C1 is Diffraction Correction in the Lens tab. Today I set out to see how effective this is. All shots were taken with a sturdy Gitzo, Cube, Electronic Shutter and Vibration Delay, focussed with Live View and triggered with Capture Pilot. The lens is the BR SK 150 f3.5 as it goes down to f32. All shots with C10 defaults only.
The first shot is at f5.6 where there should be no diffraction. (F8 and F11 were virtually indistinguishable from F5.6 so I have not posted them.) The second is F16 with Diffraction Correction, then F22 and F32 likewise with the correction..
Looking at JPGs, even at 100%, really doesn't show the differences. But at 100% in C10 on my screen I can see clear improvements, particularly in the texture of the label. The F16 shot looks almost as good as the F5.6 and much better than before the correction was applied. F22 is also improved but is clearly not as good as F5.6. The F32 shot is, well, really crappy before correction and not a lot better with it.
My conclusion from my monitor is that the DC is very well worthwhile at F16 and certainly a help at F22. F32 is improved but nowhere as good as the F5.6 shot.
F5.6
F16
F22
F32
PS - not sure why the blue cast appears on the F5.6 shot, upper right side! May have been a result of changing lighting.
The first shot is at f5.6 where there should be no diffraction. (F8 and F11 were virtually indistinguishable from F5.6 so I have not posted them.) The second is F16 with Diffraction Correction, then F22 and F32 likewise with the correction..
Looking at JPGs, even at 100%, really doesn't show the differences. But at 100% in C10 on my screen I can see clear improvements, particularly in the texture of the label. The F16 shot looks almost as good as the F5.6 and much better than before the correction was applied. F22 is also improved but is clearly not as good as F5.6. The F32 shot is, well, really crappy before correction and not a lot better with it.
My conclusion from my monitor is that the DC is very well worthwhile at F16 and certainly a help at F22. F32 is improved but nowhere as good as the F5.6 shot.
F5.6
F16
F22
F32
PS - not sure why the blue cast appears on the F5.6 shot, upper right side! May have been a result of changing lighting.