A medium format camera that I can mount an old Petzval lens on and have some semblance of a focus mechanism. Why? I really like some of the work I've seen (particularly here) with the Petzvals, but I'm not into large format.
I suppose the "official" answer is to get a view camera with a rollfilm back, but for me right now that just seems too large and awkward.
I may have to look into getting bellows for my Kiev 60 and modifying a body cap for this purpose (unless someone has a better idea, of course)...
Bronica S2a and Rollei SL66 are good candidates for this kind of adaptation. The Bronica has a dual mount system--Bronica bayonet, and 57x1mm screw mount, designed so that press camera shooters could easily adapt their press lenses. The focusing helical or bellows is separate from the lens and the body, and there is a focal plane shutter, so you just need a Petzval and a threaded ring, which could be made by a machinist like SK Grimes (well, not the late Mr. Grimes himself, but the folks who took over his shop). The Rollei has bellows focus independent of the lens, but I don't know as much about the mount.
More lenses for my Hasselblad. I have my dream camera. Currently I only have the 80mm. Not interested in wide angle, so a 100mm, 120mm, 150mm, 180mm, and a 250mm would be absolutely fantastic. And a second body, a few more film mags, a prism.
That's all I need.
"Often moments come looking for us". - Robert Frank
"Make good art!" - Neil Gaiman
"...the heart and mind are the true lens of the camera". - Yousuf Karsh
Hmmm- RolleiWide, RolleiTele in medium format. Particularly the new RolleiTele, which can close-focus without closeup lenses. In ULF, I'm hot for a 12x20 that can be used in both landscape and portrait modes.
I have my dream cameras to the point that now guilt is bigger than lust. However I do sort of lust for a completely adjustable controlable non analog camera so I can more easily put a bunch of stuff on auction. I never have owned even the cheapest of dgi camera in my life and have no interest except now I have a bunch of non photo stuff to sell.
I would lust for a Rollei Tele but I fear being struck down for greed.