Thanks guys. The shadows might seem a bit crisp for 2 reasons: Either due to the low-bitrate which really kills detail, or because they truly are sharp ). I didn't smooth them out as it would have increased the rendering time, and I tried to keep it to the minimum. The average frame render-time was less than 1 minute - on 640x272, looking of course about twice as detailed as this version. As for the light fog on the wings, you're right, they shouldn't really be there. Initially the scene was supposed to take place somewhere at sun-rise, with a denser atmosphere that would have justified the effect. I guess I got carried away and it didn't occur to me later to remove them.