Sharpening shootout: Fly ready for takeoff

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Inspired by this topic: How to get Darktable sharpness to match Lightroom - #138 by priort

There’s a lot of fine details here in the fly’s eyes and hairs. Any creative edits are welcome but primarily I’m interested in seeing how others handle sharpening, whether it’s using the many methods in darktable or any other application.

My edit is made in DT 5.3x using a combination of the demosaic capture sharpening feature as well as diffuse or sharpen lens deblur medium preset and the contrast equalizer clarity preset with the mix at 20.

I’m not sure if this would be welcome here but I personally would be interested to see comparisons with commercial software (Lightroom, PhotoLab, Topaz, etc) but that might be something better suited for an article on the pixls.us website :wink:

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Sorry to say, but this photo is in my opinion not the best one…

…to demonstrate or compare sharpening abilities.
This picture is that sharp that it even doesn’t lack sharpness if you watch it in 200% view.


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I have no commercial graphic software aside from PTGUI. So I can’t deliver any comparison in this regard.

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darktable 5.2.1


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A couple of quick attempts…

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Same two but just dropping the exposure…

Overdrive with vibrance… :slight_smile:

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Another one, just because it’S possible:


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For context… ON1 photo raw 2025…because you asked…

This is the result of two defaults… default auto processing using “brilliance AI” and then the denoise and sharpen AI again with default settings…

This is a mode called Tack Sharp AI

And you can apply both…again all defaults you could tweak for magnitude and artifacts I suppose…

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Would you please post 100% crops? The Tack sharp AI looks like it killed any structure on the Eye, but I guess it’s because of the crop.

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100% crop

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Amazing Shot! Chapeau.

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Tack Sharp is weird at least to me…I have ON1 as I got it really cheap one time so I thought I would just play with it or use it to denoise if that proved really superior…So I am not that familiar with editing it… You can see the image as it is after being processed by the Brilliance AI…also to a degree the color esp and the rendering can change a lot. It seems like ON1 has its own profiles and then ones from the camera and then it picks up Adobe one so your starting point can vary depending on that selection…

Basically the next step is to use the AI denoising and sharpening…

Classic needs to be dialed in so its like a no-op as far as I can see. You can see some details come up in the AI denoise. I could likely bump the sharpness up but likely there would be artifacts all over the place…

THe weird one is the Tack sharp. It gets added at 100 percent deblur but this seems to actually be blurred. You lose all the details if you drop the deblur slider to zero and increase micro detail then you get something… If you move over to the both setting it doesn’t combine them by default it goes back to adding the deblur at 100 so you lose all details…

THis is something that I just noticed… I made a little screen capture so hopefully that shows up… Having deblur actually seem to blur things seems weird to me…

Here are the 3 options DN AI, TS AI, and both… this time with the deblur pulled back in TS so that it doesnt kill the detail in the eye …

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ART with default CS sharpening:

DT with default CS:

200% crop for extra pixel peeping pleasure :slight_smile:

To me they look very similar.

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This is my first attempt using my AgX default style that I apply to my Canon R7 images. I figure an R10 would be similar. No extra sharpening steps applied except for default capture sharpening in the demosaic module.
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Here is my second attempt where I aimed to do more sharpening than just the capture sharpening. I also reduced the capture sharpening’s contrast mask to zero so the whole picture area was sharpened.
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Hi Uli, I notice you seem to favour the old school sharpen module in these edits. Is this your usually go to module for sharpening?

I know sometimes when I have a noisy image to sharpen I might reach for the sharpen module because I can set the threshold to avoid noise. I also have used the unsharp mask method for many years since I first used Photoshop when it came on 3.5 inch floppy disks so it is second nature to me.

Used a few G’MIC presets to give a Techni-x (a very old Fotomatic filter I use to toy with a lot a few decades ago) like result. :slight_smile:

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Pretty happy with where I got, and with how fairly easy darktable (beta) made it to get there.


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I was messing around just before going to bed and using filmic and a very simple edit I got a nice result…

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Last experiment was 3 different LC presets I sometimes use…

I usually combine some modules to sharpen. The old one is always part of my sharpening. I find it overwhelmingly easy to use and yet quite effective.
Usually I as well use some contrast equalizer and in the past D&S. Now D&S is replaced by capture sharpening even though sometime I use still D&S on top.

On this photo I found the old sharpening module quite effective and I didn’t want to fiddle around for too long. The photo simply doesn’t need that. I would have been happy with my standard setting.

For me it usually have to be simple and easy. Because editing has to be a quick process. I usually do a lot of editing after holidays. And then I often render around 1000 pictures. So there is not much time to concentrate on single photos.

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SLF Fly. :slight_smile:

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