BirdForum is the net's largest birding community dedicated to wild birds and birding, and is absolutely FREE!

Register for an account to take part in lively discussions in the forum, post your pictures in the gallery and more.

Reply to thread

Message: <blockquote data-quote="henry link" data-source="post: 2951018" data-attributes="member: 6806">My experience with glare problems is different from O_N's. I haven't observed any general pattern of worsening or improvement through time. Some old binoculars have better glare resistance than others and the same is true for new ones. I use a controlled lighting set up, so I can compare glare resistance consistently and I use a magnifier to examine the binocular interior from the rear under the test conditions that produce glare. The cause is not difficult to identify. It's always a bright spot or ring of glancing light at or near the edge of the exit pupil, like the one photographed in post #3. It can happen in binoculars that look well baffled from the front, when the baffling is not properly sized or positioned as is surprisingly often the case.I seldom find glare to be so poorly handled that it's a deal breaker, but here are a few suggestions if you are very concerned about it.1) Buy a Leica binocular. In my experience the Trinovid BA/BN and Ultravids have very effective baffling.2) Buy a large exit pupil binocular. Even when the baffling is not so effective the glare at the edge of a large exit pupil usually falls harmlessly on the iris of the eye. It may be there, but you don't see it.3) Check out some cheap binoculars. Many inexpensive binoculars have good glare resistance as an accidental byproduct of poor design. Sometimes there are (apparently deliberately) undersized baffles behind the objective lens that reduce aperture and block the glancing reflections from edge of the lens (as well as a portion of the lens itself) or a prism cluster will be so undersized that its undersized opening accomplishes the same thing.</blockquote>

Verification