I think you should get a reverse adaptor. So you can reverse mount your 50mm. But DoF IIRC not very good. And of couse, you're exposing your front rear element
I wouldn't jump into it.... best do research first and read, think properly... or else it's SSS and BBB routine all over...
The thing is...once you want to try it out, you'd try the cheaper options first, then you BBB... hooked and wanting to improve, you'd want better stuff, etc, etc... Then SSS and then BBB again... Not saying you shouldn't do it, it's probably one of the ways if you're not sure you want to go very deep into it in the longer run... At least you didn't spend so much if you decide to pull out of the genre... As always think carefully.
Thanks for the advice guys. I'm still in the midst of deciding. Will do more research and put more thought into deciding which to prioritize first before BBB :bsmilie: