Grey Men pose with the Rokinon 500mm lens. Manual aperture, manual focus. Yes it's huge. I think the closest distance it can focus is 35 feet away. I pretty much only use it for taking photos of the moon.
It's not the most useful lens in the world, and it's possibly the least useful lens in my personal collection, but I think it was under $100 so I still can't complain.
Looks a great lens, if limited. When I have been trying to photograph the moon and Saturn lately, I could have done with something like this! Mine is way too small. Love the inspection GM is giving it.