Please check out the first part of this post here.
I just tried out attaching my 105mm Pentax 67 lens to the 645D body.
Adapter works well. Lovely mechanical clicks as everything locks into place.
When you turn on the camera the readouts on the viewfinder, rear monitor and top panel all show the aperture reading as blank. The camera is however still metering so when I set the lens aperture to 2.4, the shutter speed automatically adjusted to give the correct exposure (or it’s best estimate of the correct exposure).
Found Bear, and took another portrait shot. Of course not only do you have to manually set the aperture with the aperture ring, you also need to focus as the 67 lenses are all manual focus.
Pleased with how this came out. Not having the aperture reading in the viewfinder isn’t a problem, in fact this is the same as when using the Pentax 67II normally. The 67 lenses give a nice bokeh and at 2.4 a very shallow depth of field. I will have to experiment with the 105mm, the 100mm macro and the 165mm to decide which I prefer for portraits.
I’ve put the full size image of Bear up on Flickr.