Medium Format and studio lighting

So I hope you can all forgive me for not posting in a while, but uni's been keeping me ultra busy..I just don't seem to have time to post as much anymore but im determined to get back into the spring of things and try  post once a week, but bare with me as it might take me a while to get back into things. :)
so im going to do this in a back to front kind of way, I really wanted to show you my documentary work but I haven't got my prints back yet so you'll have to wait for now..So instead im gonna post some of my medium format work,  we've been working on Hasselblad's and Mamiya's with polariod backs (medium format) and studio lighting to create different effects.

Subject F8 , Background F16.5 , Shutter speed 250 iso 100
Under exposed background.

Subject F5.6 , Background F22 , Shutter speed 250 iso 100
Over exposed background.

Subject F5.66 , Background F22.2 ,  Shutter speed 400 iso 100
Over exposed with flare

Subject F8 , Background F16 ,  Shutter speed 400 iso 100
Light flare.

 Subject F8 , Background F2.8 , Shutter speed 400 iso 100
High key.

Shoulder F11, face F11, Background F2 , Shutter speed 400 iso 100
Low key.