Originally Posted by DeanCapture

Your grain is not coming from your lens, it's coming from your asa/iso setting. If your shooting in low-light situations, you have two options. Use a high asa/iso setting which may produce unwanted pixelation (grain) or use more light (which will enable you to use a lower asa/iso producing less pixelation (grain). If you are forced to shoot in a low-light situation and you have no additional light to add to the scene, you can always use a higher asa/iso (which will produce grain) and then run the pictures thru some software like Noise Ninja which will tone down the pixelation/grain problem that your seeing.

Good luck