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.
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
40139
That's the method we used when buying my daughter's goggles. She ended up with -3.625 (R) and -4.25 (L) so we split the difference with a -4 prescription. She says they work well enough for her, and she has to be read a white board to get her workout during swim practice.
1922935
Yes - this pair allows for diopter adjustments, which you calibrate when you first use them out of the box (it may make focusing difficult for other eyes than your own, like when you lend your binos to someone else). I think the paperwork included has directions, and if not you can google how to do it :)
1743
The 1.25, 1.50, 2.0, etc refers to the strength of the glasses----the "prescription strength". The higher the number, the stronger the prescription. Someone who only needs reading glasses might only require a 1.50. Someone who can't see well without glasses would require a higher number. I would suggest you go some where like a Dollar General store and try on several different strengths of their over the counter glasses so you will know what works best for you. As for the "size" of the glasses....they kind of telescope in and out in such a way that you can adjust their size by about 4" total. Doesn't sound like much, but that's enough to accommodate most people's head size. Hope this helps! The 1.25, 1.50, 2.0, etc refers to the strength of the glasses----the "prescription strength". The higher the number, the stronger the prescription. Someone who only needs reading glasses might only require a 1.50. Someone who can't see well without glasses would require a higher number. I would suggest you go some where like a Dollar General store and try on several different strengths of their over the counter glasses so you will know what works best for you. As for the "size" of the glasses....they kind of telescope in and out in such a way that you can adjust... » Read More The 1.25, 1.50, 2.0, etc refers to the strength of the glasses----the "prescription strength". The higher the number, the stronger the prescription. Someone who only needs reading glasses might only require a 1.50. Someone who can't see well without glasses would require a higher number. I would suggest you go some where like a Dollar General store and try on several different strengths of their over the counter glasses so you will know what works best for you. As for the "size" of the glasses....they kind of telescope in and out in such a way that you can adjust their size by about 4" total. Doesn't sound like much, but that's enough to accommodate most people's head size. Hope this helps! « Show Less
2033673
Michael, Not sure exactly how much 1.2 is, but the adjustment is fairly large on the right eyepiece both + and - As a test .. I set the right eyepiece at max (-) and used my reading glasses 1.75's in the eyepiece to bring the field back to normal focus, ie left in focus, right at max - and the 1.75's on the right bring them both back to even focus. They are great binoculars and they perform very well for the weight and compact size. Hope the info helps.
107885
Go higher! under water there is less visibility, so anything that gives you the edge, I would go for... Anyway there is some eye adjustment at any point and at that level half a Dioptric is almost negligible (my unprofessional opinion)
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
600180
Being sincere, I'm not sure if that prescription will fit on the glasses but mine are 1.85-1.65 and they do. You should consult a proffesional and ask him if it worth the risk because they change the way you do sports.
1951961
There are three lenses which can be stacked for greater magnification. Using the first lens only it's about 8-8.5 inches. Add the second lens and that drops to about 4 - 4.5 inches. Add the circular lens (for the right eye only) and it drops to about 3/4 - 1 inch. Hope this helps.
918538
Actually the claimed eye relief is 17.5, which I find just about totally adequate for my use with glasses. So long as I take care and don't let them move around on my lenses, I can see the full field of view, which I haven't come close to seeing with any other optics in my life.
2070462
Pull the eye piece out at far as it will go. The dioptric is on the left hand side near the bottom of the eye piece. It's very small and hard to find and hard to to get your finger in there to make the adjustment.
1635571
I was lucky, because the loupes that I had prior to had the 2.5x written on them. It all depends on what you need for your working distance. I am five six and I work in a dental office. The 3.5 work great for me and so did the 2.5. If you are taller I would get a rep to visit you, and then order them through amazon. Through the reps their pricing is outrageously high.
282561
2.75 is not a standard lens magnification offered by the manufacturer in this style, so most vendors do not carry it. Some vendors do carry it as a specialty item, however. The vendor LittleGorgeousThings does have the 2.75 lenses at this time, but it may not be listed in the Amazon product catalog as an option; you would have to contact them directly to get it put in your glasses.
301033
20/1.7 or 14/2.5? I chose the 14 and have been pleased with the choice. It is perfect with street scenes, mountains and forests. In addition l, it is a pancake lens and packs light.
2263148
with out the 3x magnifier I wanted the two dot easy to see . with out the 3x magnifier over two dots hard to see them . yeah with 4 dots and no &#9726;3x magnifier looks like a straight line. I dint want the weight and pay the extra cash. my friend has the 4 dot and 3x magnifier really nice set up. hope this helped you :)
1974953
I set the focus for one eye in the non-diopter lens with the center focus ring, then looking at the same spot with the other eye, adjust the diopter adjustable lens to focus. Once this is done, you should be able to focus for both eyes with the center ring. Each person may have to adjust to suit their own vision, but if only one person uses the binoculars, they shouldn't have readjust the diopter to focus with the center ring. Note your diopter position for the purpose of quickly realigning if someone changes your setting,