What Samyang should really do is designing a nice MACRO LENS or two (like 100mm and 200mm). Good manual focus ring works beautifully for macro photography and there is little need for AF, if at all.
Maybe the 50mm will be a semi macro as well? Zeiss's 50mm and 100mm f/2 2:1 macros don't really have much competision besides the Tamron 60mm f/2.
I'm not sure, 50mm is kind of a standard do-it-all prime, and I would like it to have AF
. My 40mm pancake with some extension tubes can do macro as well. The 1:2 mag. would require a tube too, but its working distance is unusable for hunting insects. The AF 50/2 Macro would be great though, I would trade my 40 for that.
EDIT: I know some people have like 8 different 50(ish)mm lenses in their bags for whatever reason
. I'm not that guy.