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Message: <blockquote data-quote="ronh" data-source="post: 3123713" data-attributes="member: 55514">Mr. Owl,I like to adjust the eyecup height so I can hold the binocular firmly, but not uncomfortably so, against my eye sockets. That way, that they help center my eyes on the optics, and provide some shielding from light off to the side. It is a little bit tricky to get them to where you can see the entire field of view, but without getting so close that image blackouts are experienced when you look a little bit off axis. But what you like is personal, and you can adjust them however you like.  But it sounds like you'd be happier with them screwed in a tad.Often, the ideal setting is between two steps where the eyecups are actually made to stay. Then, keeping them where you want them can be a problem.  The best thing I have found to keep them in an in between location is good old dirt, which will accumulate in the screw adjust naturally enough with time and make it hard to move.  Keep your lenses clean, but grit in the eyecup adjustment can be a good thing.Ron</blockquote>