Upload & Sell: On
I was idly wondering about the possibility of using my Canon 500 f/4 IS lens as a spotting scope on occasion. I was dubious, because of the lack of back focus (not able to take a diagonal and astronomy eyepieces, I suspect).
I have stumbled across this Kenko "solution" for this. It would turn the 500 into a 50x spotting scope, considerably better than I would get out of just looking through the camera viewfinder.
But I don't have any feel for how well it works, but in terms of the mechanics and the optics.
Does anyone have personal experience with this interesting tool?