Please look at my signature to see my lenses. They came with my D70s as a kit. Someone told me these were for film cameras and that on a digital camera I was not getting the true mm. Is this true?. And how can you tell if a lens is meant for a digital camera as apposed to a film camera. Oh yea, he said it had to do with the size of the digital sensor being a different size than a 35mm film frame. Seemed to make sense to me when he explained it. I guess what I'm asking is, do I need to get a new lens.