are bower lenses any good?
438796
Very sharp, and great value for the money. The lenses are all completely manual focus, so bear that in mind. You might want to get the Nikon version, and use a chipped adapter so you can have focus confirmation - or you can buy the chip separately and glue it on. Re: Bower lenses anyone?
1223271
Are Meopta scopes any good? The short answer is yes, they absolutely are. Meopta scopes are nearly equal in glass quality and performance to most of the higher end European scope lines like Zeiss and Kahles, at about half the price.
138726
Great lenses, reliable company I've been using DaySoft for a couple of years now - they're good value, easy to put in, and comfortable. I buy the most expensive 'silk' line, and they're still half what you'd pay on the highstreet or with big optician brands.
1171600
All of the Leica R Lenses are a bit older, but still perfectly good. As I said above, Leica owners typically take very good care of their lenses.
250876
Spider-Man: The Ultimate Guide states that the lenses are two-way mirrors, although it doesn't explain why it bends like the fabric. As I remeber they are made of a type of plastic with a mirror coating.
514824
But if sound is not of concern, it seems like a relatively good lens for the money. Wide open, the sharpness looks fairly similar to the Canon, but with much better contrast. Once you head into the corners, though, the Yongnuo starts to lose a little of its sharpness, although keeps the contrast.
632769
The clarity on their lenses is just wonderful, and they are nice and light as well. I have a pair of Oakley sunglasses that I HATE to wear as opposed to these. They are not bad sunglasses, but are much heavier, and not nearly as comfortable. The lens clarity is just not there either.
1289302
A high-index lens can be thinner while still effectively bending the light to correct your vision. The lighter weight of a high-index lens is ideal for all refractive errors, but especially for farsightedness.
921923
Excellent Toric IOL Outcomes Research has shown that toric lenses produce excellent visual results after cataract surgery and can correct astigmatism more effectively than limbal relaxing incisions.
895778
Overall, their services are good quality and meet basic needs for people who are nearsighted, farsighted, or have astigmatism. However, Sam's Club optometrists and opticians cannot help you with more than prescribing glasses and contact lenses.
1344373
They also make lower end gear which I recommend avoiding (they are reasonably decent quality for what they are, but what they are is cheap). In their mid range equipment you will find they are all fairly even. A celestron 8" Schmidt cassegrain scope is very similar in quality to a Meade.
1298027
Overall a cheaper lens can have lower sharpness, vignetting issues, chromatic aberrations, and can have higher distortions compared to higher end lenses. It's very important to note that even expensive lenses have these issues. They are just designed to reduce the problems.
86723
Without a doubt, they are worth it. I bought two from the Kent eBay site and I use it everyday. It's high quality that you should never have to replace.
1419361
Some of the astronomers at my local observatory say that if you get the lens selection correct so you don't lose any light through the eyepiece, you don't need a Barlow lens. While others say that the Barlow lens doubling the focal length of the telescope allows me to see deep sky objects better than without it.
1342079
Fortunately, Betron is making many different headphones with a constant sound quality across the range. To be honest, these headphones are actually very good, especially for the low price. You get good clarity, bass that is not overwhelming, and great volume.
531253
Not really. While claims that these cheap glasses can permanently damage your eyesight are overblown, they're still not a good solution. Their overall poor quality can cause headaches or more vision trouble while wearing them.
766249
​I bought my Oakley Evzero Path sunglasses in the summer of 2017 and have been wearing them ever since. Their one drawback is not having interchangeable lenses, but this means they are super light and the rimless design gives a wide field of vision.