Capture One Pro 21, colors change in preview depending on level of zoom
So I've been trying out Capture One Pro for the last couple weeks, and I've run into what seems like a pretty big issue.
The colors of the preview change when you go from default zoom (fit to screen) to 100%.
What makes this worse is that the colors of exported files match the colors of the 100% preview, and therefore do not match the default preview size colors.
I imagine the vast majority of people edit their photos with the preview fit to their screen, instead of editing them by looking at 10% of their photo at a time zoomed in at 100%.
And yet because of this behavior, the actual exported photos don't look anything like the image you thought you created based on the default zoom.
I googled around and I'm finding threads about this behavior going back up to 8 years.
Here's an example. On the left is the Capture One Pro preview at default zoom, and on the right is the file exported as an uncompressed 16 bit tiff. Note the difference in the colors. The preview has more saturated oranges and blues in the streaks, the export looks a little more washed out.
Here's another example, this time the preview is on the right and the exported file is on the left. Notice the subtle differences in color in the sky, along the tower, and in the city lights.
If I zoom in on the preview to 100%, the preview colors then change to match what's actually exported.
I've tried everything I could find online, including enabling recipe proofing, making sure the proof profile is set to selected recipe, turning hardware acceleration on and off, and making sure that all my exports are to to SRGB. None of these have made a difference.
Is there any way around this or is this just accepted to be an inherent flaw in Capture One? I really don't want to have to switch to a Lightroom subscription.
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If you are 100% sure the root cause is in C1 then I would try to create a support ticket, it is possibly either a defect or a feature request.
One thing I have noticed is that not all C1 tools are actually applied to the preview image in lower zoom levels. If I remember correctly Noise reduction, maybe sharpening too, are applied only at 50% or higher. Having these tools disbaled can, under certain circumstances / certain images, change the perception of some colors.
Certainly not nice, but not a very big problem for most of my images, if I notice it. However, another additional annoyance and odd behavior to look for and check (I might not always notice it right away), hence I would like to see the tool-enabling zoom level in the preferences.
This might or might not be the issue you are seeing with your images.
Cheers
BeO
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I don't understand what you mean by "making sure that all my exports are to SRGB". It looks very much like a mismatch between colour spaces. As you probably know, the colour space/profile used when processing is the one selected in the "process recipe". Depending upon the viewer used (I noticed that it is likely "Preview" in your first example), you could observe colour differences.
I didn't observe any colour shift on my images when zooming.
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seems you discovered the family secret... this issue becomes visible with images containing higher levels of color noise and it was there for ever but c1 very much improved it with version 20. it always surprised me that not many user cared about this.
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What size do you have set for your default preview file?
What size are your original files?
What is the files size in pixels for your output TIF file
What is the difference in pixel count in each case?
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...really ?
this issue came up here, year after year and has nothing to do with profile mismatch or preview files sizes. everyone with good eyes who has also used c1 to process some noisy images must have see this. adobe and others never had this kind of problem but it took them longer to render previews so it seems by design c1 favoured speed over color accuracy and for most images this was probably a good decision but it was also a fundamental flaw too.
another contributing cause is probably that c1 starts with a more blotchy color noise level than other converter so the difference between applied and non applied color NR become more visible too. I´m sure the image the OP has posted has a lot of magenta spots in the blue sky when color NR ist turned off.
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Yes.
I would prefer accuracy over performance "on demand", e.g. if the recipe proofing is enabled:
Cheers
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sure, such an option would have been great, especially before v20 but now we have converter delivering much better NR so it is obsolete anyway.
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I ran a small experiment making use of the new 1600% zoom.
Zoom in, pick a colour block pixel and pin a colour reader to it.
Now zoom back out - perhaps through all the steps for completeness - and keep an eye on the colour values in the pinned colour readout to see if anything changes.
For the files I used the values were always consistent. But that does not mean that everyone will get the same result. It would be interesting to check.
I do not claim that this is proof of anything but it would be interesting to know if people get consistent results. Or if they observe changes as the level of zoom changes, especially between 100% and "Fit" where "Fit" is 50% or less of the 100% zoom.
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... don't totally buy this explanation because I never saw this problem in PS, LR or ARC and I do not see it in DXO. there is for sure a difference when you average an image with color NR applied or without, and I think prior to v20 c1 did not apply the same NR to the fit to screen preview image as to the 100% view, now it does and the difference is greatly reduced.
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