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How do i get the lense - Edu-Science (10166) Telescope

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I do not understand your question. Do you need an eyepiece? or do you not know how to use the telescope?

Posted on Oct 02, 2010

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What kind of lenses should I buy for my new Pentax Kr? People tell me to buy new digital lenses. What is the real scoop on lenses for this camera?


Newer lenses tend to be sharper and lighter than older lenses, and with better optical characteristics. Some digital-only lenses are also designed for the smaller sensors of some digital cameras, allowing for further reductions in size and weight. In general, lenses designed for film cameras will work with digital cameras.

If you already have Pentax-mount lenses, by all means continuing using them if you're satisfied with the results.

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What DSLR to use with Tamron AF 28-200 and 200-400 lenses


Hi, all the Sony Alpha dslr's will work on these lenses, try to get a newer model, most of these older lenses are as good if not better than the new kit lenses that come with cameras now

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My camera lense won't go in. Everytime I switch it


Your batteries are too low.
When you switch on the camera, the lense go in. Then lense comes out fully. Then, if the batteries are low, lense goes in and camera turns off.
But if the batteries are too low, camera turns off before the lense retracts or even before the lense comes out fully.

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Cant find holbrooke oakley lenses replacement... if there any way replacement lenses for tham&


Hello,

Typically Oakley has replacement lenses for their glasses but because the Holbrooke is so new it is probably going to be awhile before they have parts available. The guys at www.sunglassreplacementlenses.com could probably custom make you a set of after market lenses for about half of what Oakley will want for their lenses. You may want to email them if your lenses are thrashed.

Thanks

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Compatible nikkor lenses for nikon f 55


Almost all Nikon-mount lenses made in the past half-century will work on the F55. With old lenses, you need to make sure they're AI or adapted to AI. Among newer lenses, you don't want to use the DX lenses designed specifically for digital cameras. DX lenses will work, but you will get vignetting (dark shadows in the corners). You will also lose the autofocusing capability with AF-S lenses.

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What is so unique about Polycarbonate Lenses?


Polycarbonate lenses are the most-used alternative material for modern ophthalmic lenses. Consumer interest in thinner, more attractive spectacle lenses led to the development of special lens materials that would bend light differently than conventional plastic lenses. These materials are called "hi-index".
Among the high index materials developed for eyeglasses is one material that has a number of very unique properties and that also provides special benefits to eyeglass wearers. It carries the generic name "polycarbonate" but is sometimes called something different by other manufacturer trade names.
Great for sports protective eyewear
A "must" for kids
Comes with FREE Scratch and UV Protection
Impact Resistant - Polycarbonate Surpass AR lenses are 10 times more impact resistant than plastic lenses.
Lighter - Polycarbonate Surpass AR lenses are up to 35% lighter and thinner than standard plastic lenses for greater comfort.
UV Protection - Polycarbonate Surpass AR lenses shield your eyes from virtually 100% of the sun's harmful UV rays.
Scratch Resistant - PolyCarbonate Surpass AR lenses are hardcoated for excellent durability and scratch resistance.
Easy Care - PENTAX EasyClean™ treatment resists dust and smudges, making your Polycarbonate Surpass AR lenses easy to clean.
Polycarbonate was the first plastic high index lens and still has one of the highest index ratings (1.59). High index advantages are included with every polycarbonate lens so there is never any extra charge for high index when polycarbonate lenses are ordered. Originally used primarily for industrial safety glasses, now used for children, sports wearers, or anyone requesting greater impact resistance in their lenses.

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What are the differences between lenses? I know some are made of plastic and some from glass..Thanks!


There are couple of materials in which sunglassess are made of. 1. Glass Lenses
- it's has number of advantages: -Exceptional scratch resistance (don't need scratch resistant coating).
-Excellent optical clarity.
-Anti-reflective (AR) coating adheres to glass very well.Disadvantages are:-At least twice the weight of plastic or polycarbonate lenses.
-About 25 to 40 percent thicker than polycarbonate and high index plastic lenses.
-Can shatter or chip easier than lenses made of other materials.
-Require a special coating to provide 100% UV protection Second type is Plastic Lenses:Advantages:

Lightweight - About half the weight of glass lenses.
Plastic lenses accept tints easily.
More shatter - resistant than glass lenses.


Disadvantages:

About 20 to 35 percent thicker than polycarbonate or high index plastic lenses.
Require scratch-resistant coating for added durability.
Require a special coating to provide 100% UV protection.
Another type is Polycarbonate Lenses:Advantages:
Safest lens material - 10 times more impact resistant than other lenses.
Thin - About 20 to 25 percent thinner than plastic or glass lenses.
Lightweight - About 20 percent lighter than plastic lenses.
Blocks 100 percent UV rays without needing a special coating.
Disadvantages:
Requires scratch-resistant coating for durability.
Peripheral vision may be slightly less clear in strong prescription powers.
More lens reflections than glass or plastic lenses (AR coating recommended). High Index Plastic Lenses-Advantages:

Lightweight - Between plastic and polycarbonate lenses in weight.
Thin - About 15 to 30 percent thinner than plastic lenses.
Better peripheral optics than polycarbonate lenses (for prescription sunglasses).
Disadvantages:
Requires scratch-resistant coating for durability.
More lens reflections than glass or plastic lenses (AR coating recommended)

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What canon digital camera will use my old Canon AE1 fd lenses?


You can buy an adapter to use FD mount lenses on EOS mount cameras. See this page for more details.

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Lense adapter and extra lenses for fuji finepix E900


There are several of what you are looking for on eBay. They are slip on to fit the E900

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