Hi Jack,
Thank you for your answer! This technique is somewhat close o what im doing right now but the checkerboard pattern thing sounds really useful. I have just rendered out a shadow pass in my tests. What will the alpha hold out mattes with the object buffers do?
Also, the focal length etc. Im using a 5d mkII and if i understand this right there wont be any calculating since the cropfactor is one (as in C4D). So focal length 50 in my 5d will correspond with focal length 50 in C4D. Am i right_