10-13-2016, 11:48 AM
Thanks for the additional comments (clues!). It turns out that I was wrong. The 50mm Sonnar is the only lens that uses the inner bayonet. I think it is the only one of the four lenses that is collapsible. Considering how short and small the lens is, really, I don't think you are gaining much by making it collapse into the lens, cutting its length in half while you are walking around. But I think that having the more recessed inner mount allows for the collapsing of the 50mm lens.
As to the timing of the shutter, there are ten timings to choose from, including "B" which holds the shutter open until you release it. Then 2, 5, 10, 25, 50, 125, 250, 500, 1250. Naturally when I had the lens and back off I tried all the speeds to see if the seemed about right. No, not real scientific measurement, but still the open shutter times seemed in the right ball park.
In general, there is probably not a lot more to learn without finding someone who can mount the lenses on a mirrorless. I have read some comments on a couple of the lenses and they like the lenses. It's fun seeing how the the camera works. Will read a little more about the lenses. It might be a long time before I get to handle this type of lenses again!
@ Dave: I think I'd have more fun using an SLR with film. I've never even done that! I'd love to see what these could do on a digital.
@ Brightcolors...about the camera focusing. That is also kind of tricky. The mounting plate does rotate and has about 10mm or so of variation in height. But it also locks in it's low position. It's conceivable that some or all of the lenses that mount on the outer bayonet mount high enough so the rotating inner part of the ring does not effect the focus. I have a feeling you can focus them all by turning the lens housing, even though there is a thumbwheel that raises and lowers the inner part of the mount.
As to the timing of the shutter, there are ten timings to choose from, including "B" which holds the shutter open until you release it. Then 2, 5, 10, 25, 50, 125, 250, 500, 1250. Naturally when I had the lens and back off I tried all the speeds to see if the seemed about right. No, not real scientific measurement, but still the open shutter times seemed in the right ball park.
In general, there is probably not a lot more to learn without finding someone who can mount the lenses on a mirrorless. I have read some comments on a couple of the lenses and they like the lenses. It's fun seeing how the the camera works. Will read a little more about the lenses. It might be a long time before I get to handle this type of lenses again!
@ Dave: I think I'd have more fun using an SLR with film. I've never even done that! I'd love to see what these could do on a digital.
@ Brightcolors...about the camera focusing. That is also kind of tricky. The mounting plate does rotate and has about 10mm or so of variation in height. But it also locks in it's low position. It's conceivable that some or all of the lenses that mount on the outer bayonet mount high enough so the rotating inner part of the ring does not effect the focus. I have a feeling you can focus them all by turning the lens housing, even though there is a thumbwheel that raises and lowers the inner part of the mount.