I save all of my imagery for sharing as png because it's a non lossy format that's widely accepted across various softwares. In this sense I'm utilizing png as you would jpg but skipping the compression. I think theres a misconception that png must or does have an alpha channel. In this case no, as the imagery is flattened against a background and the alpha is dumped. Being that I didn't expect or need these images to be utilized for transparency I deliberately dump the alpha by flattening to background color. Versions of Poser up to 12 didn't recognize the alpha in png so it seemed like a safe alternative to jpeg, as no confusion could arise as no option to be confused was present. Not so with 12... just more hoops suddenly appearing with the latest Poser (mild sarcasm). Guess I'll have to consider a different lossless format that works with Poser from now on to avoid this newest complication. It's the stick and carrot of digital art making, which really, comparatively, is in it's toddler stages.