I'm considering the purchase of a 120 lense and I'm wondering if I should buy th e Apo or the Super symmar. I currently have an old optar 135mm press lense. This old lense is pretty sharp, but it degenerates at the edges. I'm looking for som ething that's sharper then the Optar near the center of the image circle, and mu ch sharper near the edge. I want to make enlargements up to say 30"x36" that are tack sharp all the way to the edge. Do I really need the super to achieve this, or is the Apo adaquate to the task? Another issue is coverage. My old optar is a little inadaquate for vertical compositions with rise. Is the Apo better than the Optar in terms of image circle diameter?
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