cairnswk wrote:It deterioraites enough when saving from CD to .png. importing that png into program and then exporting it again only deteriorates it further.
Ok, that shouldn't be possible.
I get it that you lose some quality when you save as PNG from CD, since CD is a vector software. But when you import that PNG to photoshop, it should stay the same. PNG is a lossless format. If I import a PNG image as a layer in GIMP, then save that image again as PNG, it stays exactly the same. The same should apply to photoshop by all logic.
I can see a couple of possible explanations here:
- maybe you are saving the image as an 8-bit indexed png instead of a 24 bit RGB png? PNG supports both 24-bit and 8-bit colour modes, so if you're saving as an 8-bit PNG, you'll obviously lose some detail and colour depth. You could check the settings in both softwares and see if there are options to how the PNG:s are exported.
- another explanation is that you have some sort of filters or adjustment layers active in photoshop which modify the original PNG somehow.
- or maybe you're not working in rgb mode in photoshop? if you're working in some other colourspace, like cmyk or ycbcr, it can modify the image.