I have used the Mamiya Sekor C 55mm for landscapes an for my taste, 40mm on a 645 would be too wide. If you get the zoom lens you'll probably end up bringing your 35mm and 210mm as well, so I don't think you'd be saving much space/weight by doing so. You'd also lose the ability to shoot beyond f4.5 if you got the zoom.
You can actually change the aperture in less than full stop incremements. Listen and feel for the click. In the original instruction book that came with it mentions it too.
I have the 45mm f/2.8 and it's the lens I use most often after the 80mm.
I've not had any luck finding any detent on the aperture ring for any of the lenses between full stops. I seem to be able to put the ring between stops but I don't sense any 1/3 or 1/2 stop increments. Seems solid enough if I really feel like I need to make a small tweak to an exposure but I think I'll be happier if I just relax and learn to work with the system. Thanks for helping me get my feet back on the ground!
Sadly, the 35mm lens I bought doesn't seem to be working properly. I can't select F/22 on the ring, it stops at F/16 and won't turn any farther. Also, no matter what I do I can't get the lens to actually stop down as I can with all the others. The aperture blades just never start to close down. I'm going to need to send it back, or else shoot nothing but F/3.5 :) I'm easily able to see the other lenses stop down in several different ways so I'm pretty confident the lens is faulty and not the operator. Gives me excuse enough to switch to the 45mm though so I suppose it's a blessing in disguise. The 35mm is certainly wide enough to qualify as a special purpose lens, at least in my eyes.
You have all be extremely helpful. I have rather a glut of lenses right now and after a few hikes I'm sure I'll quickly sort out which lenses make it out of the bag and which don't. The less weight I have to carry the better in the long run and it sounds like many of you have only one or two lenses that see any sort of regular use as well. Thank you!
Sounds like maybe someone who didn't know what they were doing took it apart and put it back together wrong.
Originally Posted by topslakr
Give you $20 for it :-)
Sorry all, the lens is being returned for a refund. I missed the return window at KEH but they are such a great company they are going to accept the return anyway. Such a relief for me, since I spent quite a bit more then $50 for it!