6 bit coding question

[Andy Aitken]

I'm curious as to why some older Leica lenses can be coded but not others. Is the implication that those listed will benefit while those not listed will not?

I have a good number of lenses (Leica, CV and others) but none of them can be coded according to Leica's list. I've scaped together enough for an M8 body but certainly can't afford any of the $1,000+ lenses.

If Leica can code a 1963 135mm f2.8 why not a Rigid Summicron or even a 1970's 35mm Summicron? I thought the location of screws on the flange might be the issue but both the above lenses are smooth unlike my C series lenses.

Anyone have any insight on this?

Cheers.

 

[jobo]

The 6 bit coding only gives you codes for 63 different lens types. I guess they want to keep a few in reserve for future lenses...

You could always code it as another lens with similar optical characteristics (focal length, vignetting, etc?). Is anybody with a decent collection working on a correspondence chart already?

2c, /Jobo