JPG resolution and a violet-green tint

[Jack_Brody]

Something is happening here that is probably related to the "Fit image to window, large only" setting and specific image dimensions. I have XnView MP 0.99.7 64bits on Windows 10 Pro 21H2.


On my secondary monitor (Samsung U28R550U 28") XnView displays jpegs 2010 x 1343 with weird violet-green tint and colored stripe on the right. See the screenshot - first attached image.

When I move the XnView window to my primary monitor EIZO FlexScan EV2457-BK 24" (using the shortcut Windows + SHIFT + right/left arrow) the colors display alright (but this monitor has lower resolution and the image gets resized to 76 %). No need for screenshot here since it is just a normal image filling up the entire XnView window.

So briefly:
1) first time opened on Samsung in 100 %: violet -> move to EIZO 76 %: colors normal -> move back to Samsung 100 %: violet again
2) first time opened on EIZO 76 %: normal -> move to Samsung 100 %: violet -> back to EIZO 76%: normal.

But once I manually zoom in or out on either monitor, I won't get the violet-green tint anymore no matter how many times I move the window.

So - the image ONLY appears distorted when freshly opened until zoomed in (or out).

Now: in XnView settings I changed View -> Auto image size to "No fit". No more violet-green (but the image is in 100 % zoom on both).

Another observation: when I resize the image (from source) to slightly different size - 2010 x 1340 and open it in XnView - the issue is gone. Interesting.


I am attaching both images - the good one and the bad one.

PS: I should probably also note that my monitors have different scaling - the EIZO (FullHD) is on 100 % and the Samsung (8K) has 175 % (otherwise everything would be just microscopic). Not sure if this adds up to the issue.

[xnview]

i can't reproduce, which settings>View do you have?

[Jack_Brody]

Here.

EDIT: I downloaded and opened in XnView the second attached image (the one that gets distorted) to make sure it was not modified during upload. It was not, the downloaded file works as expected - violet-green.

EDIT 2: I just figured out an interesting fact. While having opened the distorted image on my Samsung monitor with 175 % scale, I changed its scale to 100 %. The colors reverted to normal. Then I put back the 175 % scale - voilá, again the violet-green tinted image. I took screenshot of both conditions.

So this behavior depends on monitor scale... but why for God's sake?

[xnview]

Thanks to your detailed description I can reproduce the problem.

[Jack_Brody]

That is great to hear.

[xnview]

This problem is supposed to be fixed in XnView MP 1.00 beta. Please check and confirm the bug fix here.

[Jack_Brody]

I downloaded the ZIP file with 1.00 beta 1 and opened the same file with the new version and with the older 0.99.7 at the same time (on my 175% scaled Samsung).

I am happy to confirm that the weird color issue is fixed in the new beta.

Thank you very much!