Paolo,

You said the default format(for Reality & LR?)is PNG. Can it also work with BMP?

If I try to render my V4 model in DS4 with any photo backdrop I have with PNG format, I lose that backdrop. Nothing shows up in the image behind her but the empty white & grey checkered background. I need to be able to keep the background I want to use. And the photos I'm using are in Jpg and sometimes Tif. 

 

Out of curiousity, what is the largest size render you have ever made?