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.
1627786
The Raynox is very good value for money and the lens quality is quite good in the centre, less so toward the edges. That said, your macro lens is excellent and you would need a very good reason to want to use the two together. If you want more magnification I'd reverse a 50mm standard lens on the front of your macro. The rings to do that are cheap enough.
1669782
You will need to purchase a adaptation set. I previously had one for other lenses/filters, so it wasn't a problem, but I can see where this might be frustrating if you did not have these.
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.
62042
Sorry, our lens only adjust single vision. If it is for snorkeling, bifocal/reader lenses are not necessary.
817942
Wish I could help you but I wear contacts. No problem there. I've used binoculars when I had glasses and I know they can be focused to match your vision. But....how will a picture come out? I would be worried about that, but in all honesty that's a little over my head. Good luck.
911878
I can't specify "field of view," but what I can tell you - that I think is important for you to know - is that when I replace a 10x eyepiece in my low-power binocular microscope (1x objective), the image is greatly magnified from what it would appear through the eyepiece . . . perhaps about 5x as much (50x total?). I really would have liked it to stay the same, but I can understand why it doesn't. If you have a 40 or 50x eyepiece (or so) that you replace with the camera, my guess is you will see about the same picture as you see through the eyepiece. The clarity is good. Of course, it could be better, but probably not for the same price. Now that I understand the limitations, etc., I am quite pleased with it. I built my own lens and stand for it, using the barrel of a cheap flashlight and a double convex lens that just happened to fit the tube perfectly (24mm). I added a diaphragm to increase depth of field, and a baffle between the lens and camera to minimize "splash" within the tube. These are all held in position within the tube by O-rings (from Harbor Freight). The added diaphragm requires an additional light source, which I got from eBay for $3.50 (music stand LED lights on flex arms). Works pretty good!
391216
I think the 10mm & 20 mm eye piece comes with the telescope, & a basic laser finder, you may find it more enjoyable to order a 2x barlow extension, That mostly makes it a complete setup for the quality the scope
1016221
BonGiorno,You need to provide info on what you have already. Do you have rails? RedRock sells gears for your lenses. Determine the circumference and buy accordingly.I needed the A and B gears from RedRock, purchased through B and H in New York.
350251
One more thing, unless you have excellent light collection, I'd be careful. Both of these lenses absorb some light, and at maximum magnification the image may be too dark.
767370
Do a little side by side comparison, and see for yourself. The common believe in the past was that in lens IS was better, but I think with proper technique either one will work. CWDaly claveldaly.com
46935
Hi Carole. After stepping off, the number stays for about 5-6 seconds. I have had no trouble reading the numbers even while standing on the scale. They are 1 1/2 " high and I doubt you'll need your bifocals. Enjoy your purchase!
1123792
there are 10x and 20x interchangeable eyepieces, there are four lens settings on the rotating disk. I'm not sure of those magnifications, though.
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.
692445
Start with lower magnification eyepiece(20mm). During the day practice on focusing on large objects. It's also the way to align the red dot finder. I bought this scope for my grandson . He loves it
1436214
A barlow is fine. I use the GSO Barlow that actually gives you two magnification choices...http://agenaastro.com/gso-1-25-2x-achromatic-barlow-lens.html
766794
Blue lenses are excellent for all types of light. We currently have the +2.5 in stock but not the +3. Hope that helps.