head-shoulder portraits with an planar 80 + tubes??

hi people,

i was wondering if its possible to use extension tubes on a planar 80 lens and hasselblad 500cm to make head-shoulder portraits a friend of mine did it once but he borrowed all the stuff and he didn't know what he was using. anybody has an idea?

greetings
Hidde

Sure, you COULD use an 80mm with an extension tube for a head and shoulder portrait, but your subject won't like the results. Getting that close with an 80mm lens will distort the subject features, most prominently, enlarge the nose. A 150mm lens and it's increased working distance (lens to subject) would be a MUCH better choice.

I agree with Bob, but doesn't it focus close enough already? Pretty sure my 80mm Mamiya 645 lens focuses close enough for a head/shoulder shot.