Posted 24 July 2012 - 02:58 PM
I was given an Ensinor 500mm f/8 mirror lens, I bought a M42 to EOS adaptor so I could use it with my Canon EOS camera.
I was struggling to focus, not sure if its because it isn't the sharpest lens, or if I was just bad at focusing. I'm assuming it is just because it isn't the sharpest lens though.
It's amazing how close I get to things with this lens, with my normal lenses I would have just walked away from the opurtunity of filming these dragonflies.
Posted 24 July 2012 - 03:53 PM
Posted 25 July 2012 - 06:44 AM
Posted 25 July 2012 - 08:15 AM
Mirror lenses are fixed aperture. There's no stop to down.
I now seem to remember that. We had one at Otto Nemenz in the 80's. Didn't get a lot of use.
Posted 25 July 2012 - 12:21 PM