macfred: Thanks for your help. I have found a lens hood that's the 1111 and fits over a yellow filter like the ones you linked for green and blue. Sadly, a red filter that came from the same source as the yellow filter does not work. Very close, but I think the threads are wrong. So I've also come up empty on UV filters so far and thought to check here.
my III has the Novar lens. So far the only 35.5mm UV I've seen isn't a Zeiss, and might not actually screw ON as opposed to in. This is a VERY handy camera so far in my testing of it. While I'll admit the resolution isn't as fine as a 80MM Rollei 2.8 PQ (for the 6008 Integral) it is pretty doggone good.One thing I do notice is that the edges of the frames are all soft, and there is a very tiny bit of vignetting at the edges, too. I tend to imagine this is the norm. Is that so?
E: Yes, Zeiss... it's a love affair. I know some love their Summilux and Summicrons, Noctilux and so on, but I'll take a Zeiss lens any day. THanks for the encouragement!
bunnip: Yes, I would, but would like to have a filter that works with the lens hood more. Thanks! but truth is... there aren't a lot of those either. Many 32mm filters aren't thin enough to fit into the slot on the camera.