I shoot with Nikon, but there's nothing like that lens that I've been able to find. My hands are fine, I just have trouble seeing sometimes, (that old age thing). I do use tubes quite a bit and don't have problems with them. I also use the full manual ones, and have gotten fairly use to using them. I've been reading up on the lens and think I may get a used body and that lens.
What a conundrum.