Does anyone have experience with HDR Projects Platin (running on an iMac)? Specifically I can not find out how to set the output image size. I can select jpg, tif, png, etc but not the size.

What happens (and I can't remember the exact dimensions) but if I start with an image of 4800 x 3200, no matter what format I select the final image saves at about 1200 x 800.