Filter sizes for Schneider and Komuranon enlarging lenses?

[asharpe]

I have three enlarging lenses that I'd like to use for macro photography. Two of these enlarger lenses are from the 1960s, I believe, an all-chrome Schneider Componon 60/5.6 (s/n 10426747), and an all-chrome Schneider Componon 135/5.6 (s/n 10344893). I also have a Komuranon-S 75/5.6 (s/n 7030470).

Now, all are symmetric as far as I can tell, so it shouldn't make much difference if they are used reversed, but I have an ulterior motive for wanting the filter sizes: they all have rather odd mounting sizes. The 60mm is a 25mm mount; the 135mm is a 32.5mm mount, and the Komuranon is easiest to deal with, being a 39mm mount.

The 135 is the most difficult to fit. I can only find a 32.5mm -> 39mm adapter for outrageous prices (~$30-40 US), and it seems to me that if I could bring the filter size up to 49mm, I could use a fairly inexpensive M42->49mm reversing ring and use them perfectly well.

But even finding the filter sizes of these lenses has not proved to be easy. I have combed the 'net quite extensively, including Schneider's German archive site, and I cannot seem to find the information anywhere.

I can measure them myself, but I don't really know if I'm measuring the filter size correctly. I measured 40mm on the 135, but it looks like 40.5 is more standard, so that could be it. For the 60, I measured 31mm. And for the Komuranon, I measured 41mm. These don't sound right, but when I measure my 49mm filter diameter M42 lenses, I get 49mm.

Anyway, if someone is reversing these guys, or if someone just knows, perhaps someone can tell me what filter size they have.

Thanks very much for any information you might have.

[Minolfan]

DIY: Take plastic bodycaps M42 and drill the holes you need. Not expensive and it works as it should.

[asharpe]