i use it all the time. i render out my bryce/max animations at 1400x600 and keep my aspect ratio in p5. i havent noticed any pixelation at all. on an image background you would get pixelation but you gota play with the render settings to fix that. with p5's new atmospheric effects (which i havent tried and dont even know if they work) i suspect it will be easier to match a bryce exterior shot (with volumetrics) and the poser animations...