Many thanks to everyone for the advice and pointers contained in this thread, most enlightening. Just making sure PP12 works okay on my Mac and BigSur, before committing to the purchase :) and also looking at what SuperFly now does following improvements. A couple of unexpected things with eyes appearing white as the SF skin texture Eyesurface had a transparency on it (solved by uncoupling the transparency) and also some mesh lines appearing which again are simple solved by changing the skinning method for the figure from Traditional to Poser Unimesh. Include a side by side comparison of an old image with FF and SF renders, no lighting tweaks between the two. Most impressive initial result and lots of new things to learn :)