Here's a bit of a warning:
A couple of years ago, i bought a Fuji GA645zi. I shot a quick roll of film, just walking around, to make sure it 'worked.' The results were not impressive, but i chalked it up to me needing to get used to the camera. Mistake. I then took the camera on some travels abroad. Came home and found that there were only a few frames that seemed in-focus. And, even those were not as sharp as i had expected, having seen fantastic results from other photographers with the same camera. I sent the thing in to Fuji, and they told me they could calibrate the AF. They did, for about $150, and the camera was fine after that. I think my first roll wasn't overwhelmingly bad because i shot some things at small apertures and DOF covered the mistakes(?).
Whatever. So, a few weeks ago, i bought a GA645i, this time going without the zoom. Again, the 'test' roll was just 'off.' I sent the camera to Fuji, expecting them to calibrate it. But, this time, they told me the entire AF module and the circuit board needed to be replaced. For $800. Significantly more than i paid for the camera.....
My point is, i suppose, that i no longer trust AF rangefinders. You cannot see the focus working, and there's no way to verify what it's doing until it's too late. Even watching at the range data in the viewfinder isn't enough, because the readout appears to correspond to the actual distance.
I'm sure many will chime in about having nothing but positive experiences with the various Fujis, but after going for the GA645i because i wanted a 'casual,' P&S-type medium format camera, i've gone in a different direction, just to be able to have more confidence in the equipment. Just received a Bronica RF645. It won't be as quick in operation, but it's costing me too much to keep trying the Fuji thing. Besides that, how do you know, even if it IS calibrated in one moment, that it won't be out of calibration the next moment? Do these things go gradually, so that you have a falling-off of performance over time? Or, is it just -BOOM- gone, so that you shoot 20 rolls in Guatemala City and only 3 of 'em are worth anything?
Back to the original question..... I got the Bronica because i really only wanted one lens. I would have considered the 45mm for it, but i'm not keen on external viewfinders. If you want a 645 with a nice lens range, consider the Mamiya 645(Pro). You can get a fast 80mm 1.9 'normal,' lens and many of the others are 2.8s. You can use it without the motor winder to save space/weight. With or without the prism.... And, film magazines for it are cheap. Put Tri-X in one, and Portra in another.... Very nice to be able to switch on the fly like that.
