<p>Thanks, I've been fiddling with the Pentax option as well. The only thing that keeps coming back to my mind is the 1/125th sync speed and for medium format - thats like a real bummer. While in the studio it might not be an issue, Out in the field , where I love to do a lot of on-location / outdoor / environmental portraits - and I want to use strobes to overpower the sun etc. it becomes challenging. Plus with the Pentax K-1 in the market - not sure how much of a seriousness is Pentax going to have towards its MF lineup. Look at the lens lineup with Pentax today - and there's the 55mm and 90mm for Portraits. Even if I set aside the lens lineup - the sync speed is a bummer for me. Unless someone can convince me with use-cases with strobes on-location in bright / sunny conditions.</p>