Originally Posted by Broz
Good question... Not trying to be smart but I guess I ask myself,, why not? After owning many of both the 50 and 56's, I can't say I see a lot of difference. The 50 is a bit smaller, but I really have never noticed the difference while packing them or putting them in a case. I feel there are more issues pertaining to mounting them too high. In other words, use the correct height rings and 1/2 of the size of the larger bell will go un-noticed, maybe all of it. The 56 is suppose to have a little better low light capabilities. If I was going for a new NXS I would simply buy the 56 just in case it did bring something to the table once in a while. But at the same time I would not pass up a deal on a used 50mm just bcause of the bell size.
No worries Jeff, my question was basic curiousity. I've never ran the 56's so I was thinking: "hey, maybe he's on to something
?" I think your post about proper ring height was spot on. An adjustable cheek piece is helpful too