Ok, thanks, everyone. I was just curious. I have all Minolta primes, 24mm, 35mm, 50mm, 85mm, 100mm, 135mm, 200mm and a Vivitar 400mm with a Minolta mount and even a Celestron 1000mm mirror lens with a Minolta mount. All the focal lengths are basically covered with my Canon 18-55mm and 70-300mm zooms except of course that Vivitar and Celestron.
I've been wondering what to do with all this old film equipment. There's an SRT-201, two XD-11s with winders and an X-700 with the MD-1 motor drive. I don't even know if these cameras work anymore. This stuff has been sitting around for years as obviously, I'll never go back to film again. But maybe I can put that Vivitar and Celestron to use.