Hi,
Ok. I got the 67 to 645 adapter, an actual Pentax made one. I had the 67 135 macro sitting here. The 67 Soft Focus came today as well. So, all set to play some this afternoon.
I quickly figured out that something wasn't quite right with the adapter. The thing was a bit 'stiff' going on. Then, I noticed the lever on the 645 side for the aperture ring setting that communicates with the 645 body was moving as I rotated the adapter onto the 67 135 lens. And, it seemed like it didn't want to move properly once it had dragged like that.That can't be right, right? It wasn't.
It took me about 10 seconds to figure out that the tab (well, I will call it a tab) on the inner diameter of the adapter on the 67 side was what was dragging. It was bent slightly away from the edge of the adapter rim. So, it was sitting too far inboard toward the 67 lens bayonets. I gently moved it back into what was obvious (to me, anyway) the position it ought to be in. Just a millimeter or so worth of correction. Ah! Now the adapter doesn't drag like it did going onto the 67 lens and the lever on the 645 side no longer moved as I was rotating the adapter on.
Plus, the lever on the 645 side moves as it ought to when I rotate the 67 lens aperture ring. Also, it works as I'd expect when it comes to showing me the shutter speed in Av mode as I move the 67 aperture ring. Finally, a series of test shots shows decent exposure with the 67 lens in either Auto or Manual aperture mode.
I hope all that makes some sort of sense to someone other than myself!
Anyway, in case it doesn't, I fixed the thing and now it works.
Now, the Soft Focus lens is a different animal. It is always in manual aperture mode. But, it works just fine. The f3.5 softness seems a bit much, actually. But smaller apertures look pretty good. Exactly what I am going to use this lens for beats me. But, now that I have it, I will think on that and I am sure some things will suggest themselves. Maybe a soft focus shot of the gourd arch? Dreamy gourd plants. I might could use that on the gourd website. Those folks spend a lot of time dreaming about gourds.
What I am really unsure of is if I will ever use the 67 135 macro lens on the 645D because I have the 645 A 120 macro. Maybe sometimes as a regular 135mm prime. But, I always figure it is better to have something and not use it, than to not have something and need it.
Stan