hiepphotog wrote:
I tried KARWY, but the artifact is still there. I left all of the sliders at 0 so that might be the reason. But if you can chime in that would be great.
Those are definitely not lossy RAW artifacts. I've seen them before and I believe they only occur with Lightroom/ACR, my guess is the CA or colour fringe removal filters are to blame.
This is the real reason Sony need to ditch the lossy compression, it's not because of the artifacts it actually creates, but because it will be blamed for anything and everything unusual that shows up in an image!
hankd wroteNote that KARWY has also enhanced the texture of the trees slightly -- that's a natural side-effect of the texture synthesis, which is applied throughout the entire image in proportion to the size of the pixel value uncertainty.
Very interesting - does that mean that a lossless raw version of the same shot would have that enhanced texture, or is your texture synthesis going beyond addressing what has been lost in the lossy raw compression?
Thank you Hank. My bad then. That's the only thing I got that stood out. I see this in LR and DxO (milder); just try in C1, no artifact. Definitely not due to CA removal since I see it in both CA on and off options; this is not a native lens either.
Has anyone else tried the program for a before and after?
stevei wrote:
Very interesting - does that mean that a lossless raw version of the same shot would have that enhanced texture, or is your texture synthesis going beyond addressing what has been lost in the lossy raw compression?
I think I'll just say that I wouldn't have spent as much time on this as I did if I didn't see other applications for this type of algorithm. ;-)
