Has anyone attempted to work out the correlation between when an M42 takumar lens was produced and its serial number?
As I understand it, the mfortytwo.info site is attempting to collect serial numbers to test the theory that lenses were made in batches with consecutive serial numbers, which implies the obvious assumption that the serial numbers are assigned in roughly chronological order. Especially for the earlier lenses which were often only in production for a couple of years, it ought to be possible to line up serial numbers with dates within a year or two. I'm thinking about slurping down the mfortytwo.info database and doing it, but before I do I want to make sure that nobody has already done it. DJE
