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  1. C

    Plastic lenses

    I always managed to scratch my glass lenses, mostly while cleaning them. My current plastic lenses have not scratched despite being cleaned just the same way. The optician's claims are correct and I haven't had to take him up on the guarantee. I've always assumed that the coatings (AR...
  2. C

    Plastic lenses

    Thanks. Again, I had not realized the differences between eyeglass lenses and binocular lenses.
  3. C

    Plastic lenses

    Thank you. I did not realize that eyeglass lenses are not as precisely made as those in binoculars.
  4. C

    Plastic lenses

    At the risk of again offending more experienced and knowledgeable members, I have a couple of questions. Yes, I have tried to search the internet for answers. Years ago, my eyeglasses had glass lenses. My optician convinced me to switch to plastic lenses, trivex in my case. He said these lenses...
  5. C

    Blackouts?

    I read WJC's screenshot and thought I understood. Then I saw another poster say they had blackout problems with the NV but not the Ultravids. In other words, for that person, the model was relevant. That was confusing because I thought that it was the exit pupil size that matters.
  6. C

    Blackouts?

  7. C

    Blackouts?

    That's what I understood. However, some people say they get blackouts with one 8x42 binocular but not with a different model of 8x42. If that's correct, the size of the exit pupil is not related to blackouts but the size of the lens is. Have I got it straight now? Thanks.
  8. C

    Blackouts?

    I'm confused. That's not actually uncommon but perhaps I can get this one cleared up. Do all 8x42 binoculars have the same size exit pupil? Or does exit pupil refer to the diameter of the ocular lenses? I'm asking because it sounds like some 8x42 devices have trouble with blackouts from eye...
  9. C

    Looking for advice on 6X

    I have found a nice used Vortex Raptor 6.5x 32 with no marks on the lenses or body. The only negative, and it is really trivial, is a slight noise from turning the focus wheel. To my eyes, the image is as good as my old Pentax 8x42 and a new Vortex Diamondback 8x42 that I was able to compare it...
  10. C

    Looking for advice on 6X

    Thank you for your responses. I saw the positive review cited above and several others that were enthusiastic about the BD II. However, I also saw reviews that remarked on extreme “moustache” distortion, rolling ball effect, glare, astigmatism, “star burst” lines because of visible roof edges...
  11. C

    Looking for advice on 6X

    I've been reading here for a couple of years but this is my first post. I need some advice. As I've grown older, it has become difficult to hold my 8X42 binocular steady. I have looked through a 6.5x32 Vortex and think a lower power will help me. There are no local dealers to let me try out...
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