I've got -2.75 &amp; -1.75 eyes. Should I round up or down to the nearest diopter? For each eye. 2.5 or 3 for the 2.75 eye &amp; 1.5 or 2 for the 1.75 eye?
47633
So you have the option to have a different strength for each eye? I did not when getting swim goggles and went with something in the middle, so in your case, either 2 or 2.5. I have one eye too strong, one not enough, but that does not seem to be a problem.
717780
Hello L., Unfortunately, these do only come in negative diopters. We do have -8 but not +8. Sincerely, Roy Lazarus Trivillage.com
530656
Maybe, if plus or minus 2 diopters is enough to allow you to see your menu clearly. It's usable for me but i could really use a little more than +/- 2 diopters.
2075035
You can choose between 60, 90 and 120 deg angles in the menu. Even the 120 isn't really fish eyed where as normal fish eye lenses distort around the edges. Hope this helps.
886612
If I understand your Query correctly you need to wear reading glasses. Correct? The EOS Canon cameras have a pretty extensive range of adjustability built in. If you need something additional (rather unlikely) then match the diopeter number to the number you wear with your reading glasses. Such as +1.5 or +2.5...I purchased this adjustment lenses but actually found out the Canon had the correct adjustment on the camera for me around +1.75. So I don't use this piece.
1211051
What I did was, using a set of metric vernier calipers measure the outside diameter of bothe the Ocular lens (eyepiece) and the objective lens. Then using the Butler creek measurement table, chose the size as close too or slightly smaller than that measurement. I too had issues with finding what I needed and I did have to surf about a bit, but I finally found a table that had all of scope cap sizes and measurements. Hope this helps
1652323
Her is two thoughts, 1st you can use a minus 1 and that may give you the rsange you want but I took the 2nd way which I purchased a -2, that way I can use the plus adjustment to get the proper adjust. Don't to purchase an eye cup for the corrective lens.
438324
These glasses actually do have a magnification of +.25. I actually took them to my eye doctor and they measured the power for me. To put this in perspective, many reading glasses are +1 magnification. +.25 is the smallest increment, incrementing at .5 .75 and 1. So, the magnification is quite small, it just helps things become a little clearer.
557872
If you wear reading glasses...the kind you purchase at the drug store, get the same magnification. If you don't need reading glasses get the 0.0.
15899
The lenses in these are not as sophisticated as the ones you would get from an optometrist. Consider the price! As a rule, I normally go down rather than up, so in your case I would get -3 (rather than -3.5)
1770041
I am not sure if you are asking how low can you go as in is there lower then 1.8, BUT aperture can go as low as 1.2 which is EXPENSIVE. 1.8 is just fine if you are thinking cost effectiveness.
21264
Honestly there isn't a big deal between -3.50 and -3.00 and you can get either one and you will see grate. But if you are still not satisfied go for 2 pairs of one -3.00 and -3.50 and just switch lenses and this way you have to pairs with perfect match
1984672
both .12 and .2 ! if u want farther reach use the .12 but if u want accuracy then u use .2.,, i prefer using .2's
998686
Good question. The cardboard packaging says 2.5 and 6x. Looking through it and just guessing, I'd say 1.5 and 3x. The magnification is not very strong.
2173899
Remember, the minute you go from 1x1 up the power scale, you change your field of view!! If you have vision problems, then who cares!! Target acquisition during combat is probably 75% reflex. Good vision, good reflex, breath control, and trying to control adrenelean rush is paramount, but if you are shooting 300 yards or more then acquiring your target should not be a problem with a 2x magnifier. For closer targets stick with the 1x unless you have severe vision problems. ENJOY!!!
134336
i used extra low rings from TacVector Optics out of china,,and also was able to use low, mounted on brass stacker, not sure what you mean about hitting eye relief, i am about 10 inches away give or take a little
492745
No problems and glad I could help. I think you read the info incorrect though. "Optimum Eye Relief (in) 12-20 "