I'm using a canon d10. I have a 17/35 2.8 L and i found that non of the images were realy sharp. Ather buying the new 16/35L i still wasn't happy with the results. The only good results I got were made with the 85 1.8 and the 200 2.8L Now I'm having my camera cheked if there is a problem on the camara itself. Is there anybody who can confrim my findings. Are primes realy that much better when used on digital camera's?