i have a bunch of images of size 923x115 that I'd like to stitch into one panorama. Everything works fine except in the Render window I'm unable to change the output size. The allowed size is shown as 4142 in width and 512 in height, or at 384% of the original image size. The up/down arrow clicker and the slider associated with output size selections are disabled (i.e. when I click on either nothing happens; the output size is still stuck at 4142x512 and 384%). The only thing that seems to work is when I increase the DPI value in the Format pannel. (The default DPI is at 72 and if I increase it to say 720 then I see Size (measured in metrics) drops to 1/10 of its value when DPI is at 72.  I'd like to preserve the original object dimensions in the output panorama as those in the input images. I wonder if anyone might know why the output size slections are disabled? Thanks a bunch!!!