I have searched and searched and cant find a thread dedicated to the similarities and differences between the lenses. Im trying to decide on which one to buy. First off, price doesnt matter to me. What does matter is the value of the lens. If the 75mm is that much better than Ill pay for it. Has anyone done any comparisons shooting the same images with both lenses? Id love to see some. If not for those of you that have shot both more than just one time can you tell me what you like about each?