Re:snorkel mask w/ prescription lenses. to correct my nearsightedness, do I enter the ""DV" or "NV" number? my NV is 2.25. should I order 2.5?
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.
57696
Do you mean size or prescription strength? As mentioned below they are adjustable in size, although very difficult to change size of nose bridge. As for the prescription, they come in negative values. My prescription is different in each eye. -2.75 and -3.75. I picked one in the middle -3.00. They are great.
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.
2272777
I don't own an SX, but the filter size is typically written on the front of the lens. Should be a number followed by a circle with a line through it. If it says 58, you're good to go.
1726490
The description text says these are 56-18-130, which means 56mm lenses (horizontally), which does seem nice and wide (Wayfarer-style lenses are 50-54mm), 18mm for your nose, which is bigger than average (itty-bitty lady = 15mm; big dude nose = 22mm), and 130mm for the handles to reach back to your ears. A bigger guy would probably want something closer to 145mm for that, but if these go straight, maybe they could manage to sit on top of your ears if they don't manage to get behind them. I would not recommend these on account of the short temple size (the 130mm), but you'd have to try them on to know for sure. The description text says these are 56-18-130, which means 56mm lenses (horizontally), which does seem nice and wide (Wayfarer-style lenses are 50-54mm), 18mm for your nose, which is bigger than average (itty-bitty lady = 15mm; big dude nose = 22mm), and 130mm for the handles to reach back to your ears. A bigger guy would probably want something closer to 145mm for that, but if these go straight, maybe they could manage to sit on top of your ears if they don't manage to get behind them. I would not recommend these on account of the short temple size (the 130mm), but you'd have to try them... » Read More The description text says these are 56-18-130, which means 56mm lenses (horizontally), which does seem nice and wide (Wayfarer-style lenses are 50-54mm), 18mm for your nose, which is bigger than average (itty-bitty lady = 15mm; big dude nose = 22mm), and 130mm for the handles to reach back to your ears. A bigger guy would probably want something closer to 145mm for that, but if these go straight, maybe they could manage to sit on top of your ears if they don't manage to get behind them. I would not recommend these on account of the short temple size (the 130mm), but you'd have to try them on to know for sure. « Show Less
998685
It says"Magnifier 2 5x ...". I believe the 2 is just part of the product name, there is no decimal point. A 4" lens diameter can't be 5x, they just can't make them. I even asked my eye doctor about ordering one from him. So I think the lens is a 1.5x with a 3x inset as the lower information on the page description says,. I sent mine back as the one I bought at a fabric store was better. I think you could find a 2x or 2.5x in a large lens with a 6x inset somewhere else. The around the neck batteries wear out very fast so you need rechargeable batteries for cost reasons.
1898011
I just received mine and the first thing I tried was my reading glasses underneath. Worked fairly well. My everyday safety glasses had a reading bifocal lens on them. Of course it's too big to go under these, but I intend to buy a pair of those half-lens readers to go with this, since I need my regular vision in the workshop as well without having to take off two pairs of eye wear each time. Happy that I wear drugstore #2 glasses for reading. I bought these for the non-fogging quality.
1350283
There is two ways of getting your S/N#: (1) On the len's focus ring, you will see "A009N-xxxxxx" (just on the left of MAKE IN JAPAN"). P.S. The xxxxxx is etched onto the lens. (2) The S/N# is on the top left corner of the original tamron box. It is kind of big. P.S. I have to cut it out from the box in order to get the current $100 rebate from Tamron. If you cannot find it, you should bug the seller on why. May be it is gray market, or second hand. Good luck.KC
1687599
Michael - Thank you! Thank you! Thank you! I just educated myself on the 10-22 mm and decided that is the lens for me! Now to save up... :)
1276663
I've been using the 14-24mm f2.8 for a year now. Tack sharp! No lens creep. I was worried about no filters to protect glass also. Built in lens hood protects front element well enough. Lens cap fits OVER hood when not in use. I am comfortable with that. No VR doesn't seem to be an issue, as a lot of light comes through the glass and allows higher shutter speeds I feel. I generally shoot with a standard ISO of 400 to kick it up the speed a bit. Great lens. I also use the 24-70mm and 70-200mm lenses, both at f2.8 as well. Throw any pic from these three lenses on you monitor and you could cut yourself on the sharpness. LOL. I've been using the 14-24mm f2.8 for a year now. Tack sharp! No lens creep. I was worried about no filters to protect glass also. Built in lens hood protects front element well enough. Lens cap fits OVER hood when not in use. I am comfortable with that. No VR doesn't seem to be an issue, as a lot of light comes through the glass and allows higher shutter speeds I feel. I generally shoot with a standard ISO of 400 to kick it up the speed a bit. Great lens. I also use the 24-70mm and 70-200mm lenses, both at f2.8 as well. Throw any pic from these three lenses on you monitor and you could cut... » Read More I've been using the 14-24mm f2.8 for a year now. Tack sharp! No lens creep. I was worried about no filters to protect glass also. Built in lens hood protects front element well enough. Lens cap fits OVER hood when not in use. I am comfortable with that. No VR doesn't seem to be an issue, as a lot of light comes through the glass and allows higher shutter speeds I feel. I generally shoot with a standard ISO of 400 to kick it up the speed a bit. Great lens. I also use the 24-70mm and 70-200mm lenses, both at f2.8 as well. Throw any pic from these three lenses on you monitor and you could cut yourself on the sharpness. LOL. « Show Less
863064
Vision is relatively normal with snorkel in position, I use swim goggles and the fit together fine. Mask would be too big.
2212259
The "Telephoto Lens" that came with this package is a "Vivitar Series 1 - High Definition 2.2x58mm" with the number 1090413 on the lens itself. Maybe I am stupid but I do not know what IS means. On the folded paper that came with the lens, which is the "user guide", there is nothing on the paperwork that would indicate IS, whatever that is.
244031
I just received my order. Right on the side of the box for Model DPG28 it has a label that says: "99.9% UVA-UVB Protection." Can we please just retain what we "think" and only share what we know? I was wondering this same thing before I ordered, and the comment below almost caused me to not purchase them. Then I figured that it would almost be impossible to have darkened lenses that don't offer any such protection, so I looked it up online and found a vague answer saying that they did offer some kind of protection. Very pleasantly surprised to see that they offer such thorough protection!
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.
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.
1503374
The 25 and 36 refer to the size of the lens opposite the eyepiece in mm. The larger the lens the more light it gathers. This of course makes for a heavier monocular and a larger one. I have a 10x25 and it is fine. You have to have a steady hand though in using the devise.
107803
hi, none of us are opticians. I'd give them a call and ask. That way you'll get a pair of goggles that you can use to read underwater - haha - but seriously, I was thrilled when I could see clearly underwater. It's worth the effort!