One thing for sure is we have no idea what are you talking about as both images look almost exactly the same, excepting some variations with the compression algorithm between the original image and the re-saved one. It's a bit complex but maybe you can give us a better idea if you:
- Open Infraview and Paint Shop Pro. - Load the same image on both programs. - Minimize everything except these two programs. - Right click on task bar and put both windows tiled vertically (side to side). - Align both images if possible so both windows point to a same noticeable area. - Press "Print Screen" key (after putting cursor off screen). - Open Paint. - Paste the image and SAVE IT AS A PNG FILE. - Post the PNG image (your desktop screenshot) here.
Then we might totally understand what you're seeing.
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