Most Allergies to eyewear arise from the nickel metal in eyeglass frames, even frames that claim to be another metal (ie-titanium) usually still have trace amounts of nickel metal in them. If the metal on the frame is turning green where it touches your skin, this is usually a sign of nickel metal allergy.
If you do truly have an allergy to polycarbonate lenses (which I've never heard of) you can just use standard plastic (CR-39) or glass lenses.
Unfortuntely, No you can not use the AE1 Program lenses with Canon EOS cameras. They use different types of lenses, thus the diameter, connections and mount are different.
Camera lenses that enlarge distant images are normally known as long focus lenses or telephoto lenses. A few specialist lenses use mirrors as well as glass and are frequently referred to as mirror lenses.
It would depend on the lens. Higher quality lenses are coated with a substance to help eliminate distortion and light polution. If you look at the lenses glass and you see a multi-coloured reflection on the glass, then it is probably coated. Alcohol should not be used on these lenses. It would be better to use a camera lens specific cleaning cloth to clean them.
Any lens with EF mount to digital cameras and to cameras with APS-C sensor (smaller than full size) EF and EF-S mount lenses. To EOS film cameras FD mount lenses. To all EOS cameras, almost any lens with adapter: EF, EF-S, FD to other mount. For example EF to M42 adapter and you can use M42 lenses.
All the Canon A series cameras (AE-1, AE-1 program, AT-1, AV-1, A-1, AL-1) use the same lenses.
Eyeglasses are plural. Each lens is an eyeglass.
I don't see why you would want to
It is said that the eyeglasses or at least the lenses that Nero used for distance sight were made of emeralds.
Rimless eyewear, especially when worn with an anti-reflective coating, is as invisible as you can get while wearing eyewear. If you choose a matte metal in a color that's close to your skin tone or hair color, the glasses will blend in even more. Though the lenses are rimless, you'll still see the bridge and arms of the eyeglasses when you wear them.You may also find that you can't use the regular plastic lenses in rimless styles. Plastic lenses (CR-39) are typically the least expensive type you can buy, but the holes don't hold up well over time when they're placed in rimless eyewear.
Undercorrection or overcorrection in refractive surgery. Undercorrected refractive surgery patients usually can be treated with an enhancement, but overcorrected patients will need to use eyeglasses or contact lenses.
Only at extreme G-loads will corrective lenses become a problem. During normal aerobatic maneuvers, it is uncommon for pilots to be subjected to more than about 3 G's. This is usually acceptable is as far as contact lenses or eyeglasses goes. It should be noted that the air force allows fighter pilots to use corrective lenses, although if contacts are to be used, soft-contact lenses are required.
Eyeglasses work using the principle of refraction. Refraction means you are bending light. To focus light into a point means to converge it, while scattering light means to diverge it. Farsightedness and presbyopia require converging lenses to bend the light sooner and shorten the focal distance, while nearsightedness requires diverging lenses to make the light converge later and lengthen the focal distance. So eyeglasses move the point where the light rays come together so the light can focus directly on the retina. The retina is the sensitive part of the eye that perceives light and sends it to the brain.
Glasses are a plural form for glass (a drinking glass, or a lens). To indicate the plural of glasses (eyewear, a pair of eyeglasses), you would have to use the description "pairs of glasses."
Yes, they both use lenses.
Depends on the Tv. Projection tv's use lenses.
you use two convex lenses.
i am allergic to ____.