PNG was not intended by its authors to compete with JPEG and the PNG specs are clear on its inadequacy to compress as economically as JPEG. PNG was specifically created to bypass Unisys' insane patent on GIF's LZW compression. A replacement format for small images was needed as JPEG isn't suitable for those. Curious Labs' decision to switch to PNG for thumbnails is borne of the fact that if they had chosen GIF compression each copy of Poser would incorporate a licensing fee to Unisys. I've read the Unisys licensing contract, it's 27 pages long, and it sucks. Aldus/Adobe's Tag Image File Format (TIFF) is indeed rich. It's also data-bloated; this format was designed to carry enough data about 24-bit images to make color separation easier from PageMaker (the sole reason TIFF was invented). Whether compressed or not, the uncompressed version in memory is huge. Also, there are mutually incompatible compression schemes for TIFF which can plague users who choose the wrong one. In general, good JPEG compression (e.g., 60%) should be without visible artifacts, and the files should be suitable for renders. The high res textures DAZ is offering for Vicky2 are nice, but you don't really get skin realism for your buck (unless you think your skin's texture looks like the Ground bumpmap) and the memory requirements are unpleasant. Start hurling rotten fruit at me now.