The samyang 800mm lens is a difficult lens to use but rewarding once
you get used to manual focus and bracketing near the best focus. I
took this also with manual exposure in order to get it as best as i
could to see the crater near the terminator. Not as sharp as a glass
lens but a lot cheaper and a bit of fun to use. This exposure was
hand held and probably at the limit for this at the exposure given.
I did steady my arm on a railing as well. Essential an out of the
camera shot, just cropped to 1500 x 1500
pixels and slightly lifted in exposure.