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  Previous versions of davidrwilliams's message #10244781 « The new 25mm f2 Distagon ZF »

  

davidrwilliams
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Re: The new 25mm f2 Distagon ZF


AhamB wrote:
In my experience it\'s not always possible to remove CA without adding it in places where there was no visible CA before. I think I\'d rather have some blur in those extreme corner pixels and near perfect CA correction than so much CA blurring anything outside of the center of the frame. So I agree with what Toothwalker is saying above.


...wait until you try Lightroom 4 beta (or presumably, new Camera Raw 6 updates for upcoming Photoshop CS6) and see how effective the new lateral CA correction is.

I had all kinds of problems correcting the ZF35/2 in LR3 - with the Adobe profile or manual CA adjustments or a combination of both, and even changing the correction values for differing apertures, I was never able to fully correct the image (correcting for the edge left CA in the mid-field, correcting the mid-field left CA at the edge, CA varying by aperture, etc.). With the new LR 4 beta, I\'m seeing virtually perfect correction for this lens across the entire field for all apertures.

I had a similar problem with the Nikon 24-70 AFS, but this has also benefited significantly from the new LR CA correction tool.



Jan 25, 2012 at 10:50 PM
davidrwilliams
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Re: The new 25mm f2 Distagon ZF


AhamB wrote:
In my experience it\'s not always possible to remove CA without adding it in places where there was no visible CA before. I think I\'d rather have some blur in those extreme corner pixels and near perfect CA correction than so much CA blurring anything outside of the center of the frame. So I agree with what Toothwalker is saying above.


...wait until you try Lightroom 4 beta (or presumably, new Camera Raw 6 updates for upcoming Photoshop CS6) and see how effective the new lateral CA correction is.

I had all kinds of problems correcting the ZF35/2, as with either the Adobe profiles, manual CA adjustments, a combination of both, Iand changing the correction values for differing apertures, I was never able to fully correct the image (correcting for the edge left CA in the mid-field, correcting the mid-field left CA at the edge, CA varying by aperture, etc.) but with the new LR 4 beta, I\'m seeing virtually perfect correction for this lens across the entire field for all apertures.

I had a similar problem with the Nikon 24-70 AFS, but this has also benefited significantly from the new LR CA correction tool.



Jan 13, 2012 at 04:28 PM





  Previous versions of davidrwilliams's message #10244781 « The new 25mm f2 Distagon ZF »