Quote:
Originally Posted by madshi
Thanks. Maybe I can add an AR filter to FineSharp in the future.
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Extremely interesting idea. Would love to try it out.
But now to my follow-up regarding Finesharp vs. AdaptiveSharpen, which I now had a bit more time to dig deeper, after I did some more tests with different samples.
On a more general note, from the samples I looked at, Finesharp is a lot more uniform with it's sharpening, which especially benefits real-world content, since it doesn't selectively sharpen like AdaptiveSharpen. Which means that, if you want to sharpen the whole image for basically the same value, Finesharp is definitely the way to go. It also looks way more natural due to this behaviour.
AdaptiveSharpen is definitely not a replacement for Finesharp, but more like an additional sharpening effect, which can be beneficial on some content, but (see below) you have to be very careful with higher values.
Also, there are huge (and I mean HUGE) differences when you compare both algorithms using image enhancements and upsaling refinement, more below.
Here's an example, why I would completely stay away from AdaptiveSharpen on the image enhancements tab, no matter what values you set.
Image enhancements - Finesharp 1.0
Image enhancements - AdaptiveSharpen 0.3
I think I don't need to explain the results, they speak for themselves. Finesharp can be used with very high values (I still would recommend not to go much higher than 1.0), while AdaptiveSharpen even beginning from values like 0.1 already rings and 0.3 already rings like crazy and it also adds some very strange look to the image. On game recordings, anime and real-world content, this should be avoided at all cost. For image enhancements, Finesharp is the clear winner on all the content I have looked at and tested. With an additional AR algorithm applied, Finesharp would be very close to perfect.
The situation with the higher ringing that AdaptiveSharpen shows when used in the image enhancement tab, completely reverses when you use AdaptiveSharpen on the upscaling refinement tab. Using the same values from above, AdaptiveSharpen rings a lot less than FineSharp in this tab, however, it still retains that oil painting look that worsens the higher you go with the values.
So, for me, personally, I would stay away from AdaptiveSharpen in the image enhancements tab altogether and only use it in the upscaling refinements tab and also preferably with VERY low values (like 0.1 or maybe even lower).