Hi Dave,
answers are yes to the tripod bush - if you look at image number 3, on the right (bottom of the camera in landscape format) of the camera is a small knurled 'extended tripod bushing' (black). Dean makes these due to the frame for the 4x5 back extending below the original line of the body. Having said that, I have rarely needed to mount it on a tripod. These cameras excel in handheld use.
Change lenses? Possible, but not like a conventional camera. The lens panel is integral to the camera, so you would have to start by unscrewing the lens cells (and shutter), then adjust the infinity stops (or manufacture new ones), and then custom grind yourself a new rangefinder cam to the lens you want to use. They are basically built around a lens choice (I had two at one point). Dean will build you pretty much anything that is possible (or he could mod. this one if you send him the camera and a lens). I'm not too sure if you would need a new cam/ infinity stops if you wanted a different 150mm lens.
Hope that answers your (not daft) questions.
Best,
Matthew.
dave shutter wrote:Hi,
Please excuse daft questions!
Does the camera have a tripod bush?
Can one change lenses?
Many thanks,
David