type of lens ( glass or plastic ) ?
103974
The lens is actually a polycarbonate which is a optical quality material and virtually unbreakable. It is actually a lighter and more expensive material than glass.
797519
It is PMMA acrylic (trade names include Lucite/Plexiglass). Thickness comes it at 0.0800 inches. It is not as scratch resistant as glass but it is 17x more impact resistant. Acrylic is better than polycarbonate because polycarbonate is not UV resistant. No telling who the lens is made by.
2129133
It is plastic, but according to Ken Rockwell (kenrockwell dot com ) and his very glowing review of this lens, it is "good" plastic. (That's why it is so reasonable in price) But according to Ken's review, the optics are superior to any other Crop Sensor UWA out there - including the much more expensive 10-22mm from Canon.UPDATE 29 Aug 14: Now that I have had this lens for a couple months, I will say that, while it is plastic, it doesn't feel "cheap." The mount is machine-grade plastic and fits very nicely on my 7D. For the price, this is a heck of a lens.
624644
The short answer is "You get what you pay for." Not all glass is created equal. Less expensive lenses often prove to have inferior glass (greater distortion, higher chromatic dispersion, etc.) If your images don't require the kind of detail that higher priced lenses provide, then go with the less expensive lens.
1052873
The lenses appear to be glass, the case is plastic.I will add that this has been a very worthwhile addition for night spotting out to 100 yards.
776494
Glass is sharper, and the sharpness is broader in the middle Vs. the plastic one only being very sharp almost completely in the center. The glass lens also has less of the barrel distortion. I'ts simply about preference, typically people purchase the holga cameras for the distortion ability...
1180296
This a lens is made of metal, some plastic and the optical elements are, of course made of glass. If you go in a store and take a look you will see that it is a sturdy lens worth every penny it costs
958629
These are clear plastic. Seriously GREAT "glasses"...highly recommend them.
1502385
All Pentax lens with a plastic mount begin with a DAL designation. Those that begin with a DA designation have a metal mount. This is a DA or metal mount.
1371925
The lens housing is made of plastic. This lens is sometimes referred to as the " plastic fantastic".
1045828
They are glass, but when I screwed them on they kept popping of the lens, not sure if I just got a bad batch or what. I did like that you can put each one in its separate slot, but was disappointed with the quality. Hope that helps.
793455
Plastic. I got them in two days. They came in two separate boxes bundled together. They were wrapped in a plastic bag with bubble wrap around that. I have not installed them yet, but they look identical to my oem lenses. Overall, I am very satisfied with my purchase.
1617855
Yes, the lens is glass. No tools, no instructions, but it's easy to install.
823896
As far as I can tell, yes, the lens is glass, and not plastic. I have been pleased with this magnifier which I purchased to read hallmarks on sterling silver. It works well both due to the lighted magnification, but also because it is small and thus fits into tight spaces.
310405
I had two Tamron SP 150-600mm f/5-6.3 Di VC USD lenses, one for Canon and one for Nikon, both came in with plastic case. I enjoyed both lenses with Auto shots.
155854
Because the lens is light I'd guess it was plastic but that's only a guess. It's installed now so I can't check. It's working fine whatever the material.
1371924
Majorly of plastic. The uv lens has a tendency to reflect back light. I don't use it. But it's still a great product and a must have in your lens kit!