Summary: I purchased this lens for one reason; to photograph the moon. Unfortunately, the images produced are not sufficiently sharp - even using a shutter release and fast shutter speed. At this price point, I imagine there is considerable variability in quality.
the mirror lens is a really cool idea, but the distortion thrown into the image ...
11 September 2014
Summary: the mirror lens is a really cool idea, but the distortion thrown into the image by getting bounced back and forth so many times before reaching your sensor, leaves you with something to be desired when taking photos. and that something is sharpness.
Summary: The Vivitar 500MR lens Mirror Telephoto Lens was well made but after hours of testing and hundresd of photo's on a Nikon D70S and a New Nikon D3200, on tripod and with remote shutter release I could not get a decent photo no matter what settings I used, I really hated that it would not take a decent...
Summary: I purchased this used, however, if I didn't know it was "used", I would've thought it was new. A much better product than the older f/6.3 version due mainly to the smaller size. Photos are sharp with very little of any aberrations.
Summary: I've only spent an hour or so testing this lens, but so far I'm quite happy with it. But be realistic, this is NOT an "L" class lens, nor is it "fast glass"! For $100 (in round numbers), however, it is fairly decent. First, be sure to order an adapter that fits YOUR camera to go with it.
Summary: Solid quality construction. Sturdy, yet lightweight, and doesn't have the least "dinky" feel to it. Very smooth focus ring with just the right amount of resistance. This f/8.0 version is, with its 72mm diameter, very portable and quite a bit smaller than the f/6.3 variant with its 92mm diameter.