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Message: <blockquote data-quote="birdrousta" data-source="post: 3380855" data-attributes="member: 129957">I'm not at 8 diopters, but I do notice a significantly better image when I don't wear my eyeglasses, and have noticed it for years.  I drove microscopes professionally for a time, and the first thing anyone who wore glasses did when using one was to take off our eyeglasses.  This was true for folks with hard-line, glass bifocals like the fellow who ran the lab as well as the students who worked there.  Of course, the environment near a microscope is very predictable, the environment near binoculars is not.  UPS dropped a box off at the house this afternoon with a set of Maven B2s with 8 diopters of overfocus.  The astronomy weather forecast for tonight is pretty good, and with luck I'll be able to get out with the dogs in daylight on a ridge for a time as well.  I think the contrast issue you describe has a second source, in addition to the additional layer of glass or plastic - it's holding the binoculars farther from your eyes, and as a result, light from either side degrades the image and in particular the contrast.  In your place, I would think about looking for binoculars that can accomodate a lot of overfocus.  Maven will do up to 12 D of overfocus.  There are folks here who have written to Leica and asked that their binoculars have additional focus past infinity added to compensate for nearsightedness, and Leica has made that adjustment for free.  I don't know if Zeiss or Swaro or Nikon would or wouldn't do the same, but you could certainly ask your dealer to ask on your behalf.  If you find a pair of binoculars you really like and are not concerned about the warranty, you might be able to find someone locally who can make the change for you.One way to do it, perhaps the simplest way, is apparently to move the oculars somewhat closer to the objective lenses.  (Hopefully someone can correct me if I am not understanding that, and can explain what the tradeoffs involved are?)  But I do hope you're also able to find a way to get your glasses made properly for you.  I am wearing a new-ish set of glasses and will be heading back to the optometrist soon to have them look to be sure the center of the curve is correct for my IPD - your notes on glasses with the correction not properly centered are making me wonder if that's why I'm having a longer adjustment period with these than I normally do.</blockquote>

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