I know from experience a 5mm exit pupil is more comfortable than a 4mm at sea, but the 7mm that the 7x50 gives you is better yet. You've mentioned being unhappy with a Pentax 7x50 - this is the standard format for marine use, so it would be interesting to know why you don't get along with it? I've read somewhere that 6x30 was recommended by the Coast Guard for small boat use, and although 6x mag has always seemed a little underpowered for birding, I suppose if you're already familiar with where markers, buoys, and other boats ought to be, and are proceeding slowly so you have a fair amount of time to find them, they'd be fine. Leica puts a new spin on their perennial favorite, the 8x42 Trinovid HD Binoculars with phase corrected prisms that are coated with highly reflective multi. Both these issues are amplified on a boat and, having tried 8x30s on a boat myself, I've found them very jouncy unless it's calm. Leitz trinovid binoculars Does Leica have a customer service I was given a pair of Leitz trinovid 10x40 ba - Zeiss Classic B/GA 524013 Binocular question. When Leitz introduced these new TRINOVIDs, they had more. There is more - not a great deal more, but noticeably so - shake with 8x, and anything with a 4mm exit pupil is going to be more finicky with regard to eye placement. These were introduced fifty years ago in 1963, however, Leitz has been making binoculars since 1907. Unless you've already tried an 8x32 on your vessel and am happy with it - in which case you should disregard the following - I would be cautious about recommending that format to a boat owner. Regarding the 8x32s you ordered - I've spent a fair amount of time on small boats (40 ft and smaller) as well as plenty of time with 8x32 binoculars.

It's in beautiful condition externally (hopefully internally too).

Leitz binoculars trinovid