Phily: I did not render that high but sometimes in poser if you have say your work space set at 800 x 600 and render at 3000 x 3000 it will strech the background making it distorted and blurry . The original size of this photo is 2112 x 2640 so it might not be a good idea to go beyond that , I do not know the answer . I rendered up to 1000 x 1000 and it wasnt blurry . That one panel #3 original seems to be a bit blurry and why it has a white border is beyond me . It does goes away when rendered though . It seems to work well in the back ground but not very well in the foreground.