Summary: I didn't realize how oversized this lens was. But I never was able to use the lens because my LUMIX DMC-G1 would not recognize the lens. The mount adapter and 2X telephoto lens that came with the Opteka were very poor quality, would not separate after assembled and I do not believe they could...
Summary: Any review of this lens has to be prefixed with the phrase "for the money" and yes, for the money this is great. Be warned it is so long at 1000mm that you really really need a tripod or monopod. In 500 mode you can hold it if you have something to brace your arm against.
You Get What You Pay For, And This is Exactly What You'd Think It Is.
Wade Johnston "WJ", Amazon
17 May 2015
Summary: OK you get what you pay for, and this is a $150.00 lens. Let's get something's clear, I gave this 2 stars because I had a pretty good idea of what I was getting into when I got this lens. Now here is the reality. This lens is by no means a high quality lens.