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.
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.
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.
1683132
It depends on what you'd eyeglass prescription is. You should check with you Optomotridt and find out what your prescription is and then get the diopter closest to that.Rich Signorelli
1340325
The first number is the power of the lens, that is how much it will magnify the image. The second number represents the diameter of the lens in mm. They work together to calculate a number called the "exit pupil" or "exit ratio". Take the lens size and divide it by the power to get this number. The higher the number, the brighter the image. For example, 10x50 will give an exit ratio of 5.0, 8x42 would be 5.25, 10x42 would be 4.2. In my opinion, the exit ratio is more important than the power. My favorite binoculars are 8x50 (6.25) but I also just bought 10x50 as a gift who is delighted with that configuration. Stay away from high-power binoculars. They, for me, are too hard to keep steady due to the high magnification. I hope this helps. -Norm
2075683
My vision is not that far out however I have issues with small print and it is exactly what I use them for is reading. the multiple lens should give you a good match. I wear over my glasses also.
1442237
Yes, I think the right-hand diopter adjustment is usual. I admit I don't use it often as the improved adjustable eyecups and big bright eyepieces allow me to keep my glasses on. I do like these binoculars. I especially value their ability to focus close-up, so they work as well for the backyard feeder as out in the field.
1632326
i've found 1 1/2" is the "best". That close, always manual focus if possible.
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.
65715
I ordered the mask for my girlfriend who is near-sighted. She gave me a copy of her prescription. Under the "Dist" part of her prescription, sphere is -8.5 which is the number I used when I placed my mask order. I am assuming "DV" is distance, and "NV" is near. If so, I believe you would enter the "DV" number. The mask worked great for my girlfriend. She said she could see better out of the mask than her glasses. Hope that helps, Brian H.
1951964
In our line of work we are working on small die parts at close range. Roughly six inches away from the actual lens. Closer for the smaller lens. Roughly 2''... Everyone's eye muscles are different though.
2087332
Eye relief is unlimited due to being 1x. Even at indirect view. As long as the dot is on target Use mine at about 8 inches.
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.
2182543
If you pull out the viewfinder you'll find a small dial. That's the diopter adjustment. It's great when you go from glasses to no glasses. Before you set it make sure you've actually had the camera properly focused on something first.
2263147
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 ◾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 :)
717780
Hello L., Unfortunately, these do only come in negative diopters. We do have -8 but not +8. Sincerely, Roy Lazarus Trivillage.com
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 :)