Nope , the original image. Bart says it doesn't sharpen well. Not very clear why, but my understanding is he feels the image falls apart in sharpening.
Hi Erik,
That's correct. Proper (deconvolution) sharpening procedures restore resolution, but they do require a reasonably close resembling PSF to do their blur reversal while retaining a natural/organic look.
No matter what I tried (so far) on the moss images, it didn't restore a natural looking transition from blur to sharpness. Part of the explanation may be that the aliased pixel sharpness dominates the blur to a degree that it becomes objectionably visible as block artifacts (stair-stepping) before real blur is even removed. Trying to completely (as far as present in the optical image, i.e. lens + sensor) restore sharpness will exaggerate the stairstepping artifacts too much.
So we seem to have a somewhat blurry optical image, and a sharper stair-stepping artifacting that prevents optimal deblurring in a single operation. Had the lens been sharper, there would be less of a difference between the inherent blur and the sharp artifacts, and less sharpening could lift the total image resolution without too much artifact 'enhancement'.
Maybe, but that needs to be tested further, there is sort of a solution possible in the sense of adding an
additional very small radius blur before doing the deconvolution of the real larger radius lens blur. That very small radius blur would take the 'edge' of the stair-stepping and take that detail level down a bit, closer to the real lens blur. Then a subsequent deconvolution of the real lens blur will not exaggerate the stair-stepping as much, and real lens resolution can be restored more.
Bart, like me noted significant colour aliasing in the image when processed in LR 5.3, that colour aliasing doesn't show up in C1, but my guess is that it is still around in it's monochrome form and can create fake detail.
It's not just the false color artifacting (which is more Bayer CFA related, and usually repairs relatively well), but also a more subtle treatment of aliasing that was introduced with the Capture One 7 engine. I also noticed it in images with my 1Ds3 which, despite the AA-filter, is still capable of aliasing and stair-stepping, but less so with Capture One 7.
Cheers,
Bart