I prefer PNG format to JPG, because JPG uses lossy compression.
IfWhen I capture a screen in my PC or scan a picture or document in my scanner, I always save them as PNG format.
If a camera could save its data as PNG format, I'd use the feature even if I needed to buy more memory cards.
But I haven't see any camera that does. Why not? Why don't most (or any) cameras support PNG format?
P.S My camera doesn't support RAW.