Remember the 500mm Mirror Lens I had back in May? In spite of the horrid bokeh, I couldn’t stop thinking about it. I broke down and found another one on ebay. After months of researching mirror lenses I settled in on the Sigma 600mm. This one is bigger, and on a DSLR it has an effective power of 18x. What led me to this one was the thought that what mattered was the size of the objective lens (the exposed glass on the front of the lens) which on the Sigma 600mm is 95mm.
Anyhow, the stupid doughnut machine is back. It’s so much fun to use, it’s like the best binoculars that takes pictures and doesn’t weigh a ton. The trick is to find things with plain backgrounds.