Tom C wrote this about his 500mm lens:
"I can see myself using this for several hours every weekend this summer, so... Thanks!"
Tom,
That lens focuses to about 30'. A set of extension tubes will make the lens far more useful for birds. I got some vignetting when I used the lens shade and extension tubes together. That may not be an issue with digital.
The lens is a beast but it's sharp (especially considering the age of the design).
Tom Reese
