
I haven't seen this with other software.Īnd I'm really missing the ability to resize the image, see the result and make eventual some corrections. So with the size I post here, longest size 1600, as well with images of the D700,4256x2832, and of the D750, 6016x4016. While I also use Photolab, I only do so as a raw converter and I do all my sharpening and resizing in Photoshop, so can't help you with these questions either.That change from sharp to unsharp happens going from 70% to 80%, independent of the image size. The rationale is a bit obscure, but as sharpening effectively is local brightening and darkening at the edges, the 50% approach is to compensate for the fact that the human visual system is more tuned to shadow detail than the highlights and this seems to balance out this effect. For output sharpening the suggestion is to view the image at 50%. Most sources I use suggest that all input and in-process sharpening should be done at 100% size to avoid the resampling issues. As these algorithms are all different, there are questions on how accurately they show the image.

George - whenever you are not looking at an image at full size, the software will upsample and downsample to get it to fit the screen.
