Picked up an ancient rangefinder cheap and still need to make new shutter curtains. I could use a UV or skylight filter for a 34mm filter ring. I also need a yellow and (what else do you have) in 40mm, as I have a step up ring and the other lens uses a 40mm. Would prefer chrome over black, but that is just a cosmetic silliness. So what do you have on the cheap? It would be super neat if it said Canon on it, but I really dont care, not a collector.