Certainly at present, I tend to go with Gamma Correction on... more often than not that's giving a better result for me.

I then can always adjust the levels in Photoshop if not happy. Last couple of renders I did, the only postwork was to shrink and compress the images to post up here.

Having that option in poser to output an HDR is great though...

I've been using the HDR output option in Vue, to produce spherical panoramas, for use in BB's envsphere, back within Poser (with Vue's Gamma Correction disabled, per BB' instructions, as I'm, of course, then likely correcting the Gamma in my Poser render).

But there is an issue apparently with Vue rendering out a full range HDR image... that I'm still looking at working around... for as much as that matters, in practice...

As I understand it, Poser's HDR output does produce a full range image?

;-)