Maybe this question is a little of a tangent, but how do you focus on a Crown when the bed is dropped? The rack-and-pinion focussing won't operate (much - and even then, you're straining it.) so it appears that you have to focus by unlocking the gross adjustment lock and sliding it by hand on the short rail. Of course, depth-of-field will be greater for the shorter lens, but thsi still seems an unsatisfactory way to focus. Am I missing something?
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