There is some nice info on Schneider's vintage lenses on their web site. ex:
<http://www.schneideroptics.com/info/vintage_lens_data/large_format_lenses/tele-arton/data/5.5-240mm.htm>
However I am stumped when it comes to decoding the shutter designation, from the above link it is "II 5/2+3 or *I+1".
I could not find a reference to the coding. My guess would be that the Roman numerals define a Compur or Compound (which?) shutter size, with the decimals being front and back spacers. Also the * doesn't seem to have any reference either.
Does anyone know how it works?
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