I have graduated lenses - Would I be best advised to order bifocals? And, how do you incorporate Cyl and Axis measurements?
282297
Hi Todd, I did not see option to order bifocals so I can not comment. Best..
282298
I do not know what 'cyl' and 'axis' measurements are, but, here is what we did:1. when ordering Speedo goggles, we got the +/- number, from our opthomologist.2. when ordering the ProMate snorkeling mask, we selected the the color and then selected the appropriate eye-adjustment (my son is nearsighted) from the "size" pull-down menu on the ProMate scuba options.3. My 13 year-old son loves the mask and was our family underwater photographer in Cozumel.
282299
I have graduated lenses also; however, I just went with single vision lenses in my mask. Don't know about Cyl and Axis ... I didn't bother (even tho I have an astigmatism) and they worked great
282300
I wear trifocals and the single lens correction worked just fine. I wasn't close enough to need the extra correction even when I was about 3 feet away.
1415582
basically, the same size as the reading lens in a pair of bifocals. you can trim them if necessary
1860029
It used to be right on the page, but now it's no longer an options, so perhaps they're out of stock. If you check out this pair, you can see how you can choose different magnifications (at least as of 2/10/2015). GAMMA RAY ESSENTIALS GR E-801-C1 Computer Glasses with UV Protection, Anti Blue Rays, Anti Glare and Scratch Resistant Lens in 52-18-135 Size - With 0.00 Magnification
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.
149994
I think my lens are one complete lens at -6. I don't know anything about magnification at the bottom. They are not for reading, so I think they are one complete lens at whatever you order. I am very happy with mine.
43023
I was looking at these and changed to a 10 x 50 Celestron " Up Close G2" . They were only $31.16 shipping a d i would by another pair tomorrow if need be. Crisp wide almost 3D vision. Check those out before spending your hard earned bucks.
1592311
When I got mine I did not have to collimate it. You do have to use the proper lenses and focus each one as you switch between them. I'd call Orion - they will help you out.
1595888
I got 2 lenses with mine (from a year or so ago) a 6mm and a 15mm. The 15mm lens gives a wider field of view while the 6mm lens "zooms" in on the target object for more detail - they should be labeled.The cap with the hole in it is used to calibrate the telescope mirrors (it's called a Collimation cap) - you should not need to use it. If you are interested in all the ins and outs of collimation, you can google it, but I've had my scope for over a year and have not needed to go through the process.
64369
Because of the difference I would suggest buying 1 pair in each of the diopters you need and swapping out the lenses. For me the difference was only 1 point so I went up a half. They've worked out great.
2112864
You need to buy the size that your lens is unless you use converter rings. So to know what it the best size measure your lens and buy that size or one the supports a conversion to your size.
1025376
Sorry, but I don't have an expert answer. Here's what I did. I simply measured, with a very accurate ruler the exact outside center cross distance on the lens. No matter if it measures in inches or metric, just Google the number for a conversion. Worked perfect for me on the first and subsequent orders.. The covers fit perfect, are very well made and I'm very happy to have this protection for all of my lenses. Hope this "grass-roots" method works for you. Bob D., Maine
1868994
Perhaps the best guide for A-mount lenses can be found on the Dyxum website: http://www.dyxum.com/LENSES/INDEX.ASP
2137996
There are 2 silver hex bolts sticking out of the back. One adjusts horizontal, the other adjusts vertical. Gently twist them. I overtightened one and snapped it resulting in ordering a new set of lenses.
545013
I would get the lenses prescribed with an optical or if not get a mask that will let u put perscription on them. I wear glasses too.I just put my contacts when i go diving!!
923249
This probably is not helpful: I'm delighted with the 45-175mm, but I got it for a steal as an Amazon lightning deal for just under $200. Buying was a no-brainer. So the only real advice I can offer is to be extremely patient and keep your eyes open for a great deal on the 45-175mm.
496726
The manufacturer is the first option. Don't remember if there was any address on the box. I believe they are a standard size as my eyepiece camera fits 2 different microscopes.
496261
The distance between the center of the pupils when focused on infinity (Interpupillary Distance)is not given in any of the specs for these binocs.Jim