thanks a lot jan. i had heard of that book but forgot about it. i will pick it up on the double.

can you recommend me any additional resources that might teach me about grain pattern as a subject in itself?

i would like to become an expert in codecs and formats and compressions. how formats, (especially the formats from my camera the hpx500 - dvcproHD) goes about making up the image, its systems, etc. and how my camera can work to my advantage in creating grain patterns, artifacting and textures.

i will post this concern too. thanks for your help.