This is a great product as long as you use a mono or ...
Allan B., Amazon
13 November 2014
Summary: Have been looking for telephoto lens for a while and really could not afford the prices I was seeing. This is a great product as long as you use a mono or tripod. I use it for shooting wildlife that is hard to get close to. The price was right up my ally and very easy to mount to my Cannon Eos T3i.
Summary: I wanted to buy a cheap lens to experiment with high focal range telephoto photography. Mirror lenses inherently have lower sharpness due to their optics but they are much cheaper and lighter than their telephoto lens counterparts. This is a very basic lens so using a tripod is a must to obtain decent photos due to the fixed 6.3 f stop and lack of optical stabilization.
Summary: Yes its a 500 mm lens. It blows things up well. But color saturation and resolution sucks. Tried to take pic of the moon with it... yeah no it just never happened. Want detail in the pic... no not happening. The only good thing about this lens was that it only cost $160. Great little toy. I wish some people could do more with mirror technology to get better quality pictures.
I wasn't expecting those just hoping to use it but I found a better alternative that I'm super happy with
19 August 2014
Summary: I'm sure this works as it's designed. I just had such a hard time getting it on my camera (has an adapter) and then even shooting with a tripod I didn't realize how heavy this was going to be so I wasn't impressed. I wasn't sure what I was getting when I bought this other than the reviews you can't expect miracles. I wasn't expecting those just hoping to use it but I found a better alternative that I'm super happy with.
Summary: I had this lens for about 6 months now. I concur with the comments about how sensitive this lens is when focusing it. My seems to "recoil" if I let the barrel go. Doesn't matter if you hand hold your camera or if it's on a tripod, the focus will creep on you. So I hold the barrel to ensure that I am getting the focus I need. I also figured since that my lens is new, I "break it in", I'll loosen the barrel up enough so that it won't creep (as much).
Excerpt: Nice lens for price. It will do nicely for what intend - nature/wildlife photography. A bit heavy, so a tripod will be needed most often.Only complaint, it should be sold with a mandatory choice of adapter mount. Received the lens then realized even though I had searched using the following "mirror lens for Nikon D5200" the hiit appeared as if it were fully compatible with my camera