Marc, I will try to better myself. LTM it will be henceforth. ;-) Jan On Jun 10, 2010, at 1:07 AM, FreeLists Mailing List Manager wrote:
From: Marc James Small <marcsmall@xxxxxxxxxxx> At 09:20 AM 6/9/2010, Jan Decher wrote:Some years ago I bought lens blanks from Hadley Chamberlain (http:// www.hecphoto.com/) and had M39 (LTM) threads<sigh> You can lead 'em to water, but you can't make 'em drink! M39 is NOT LTM. M39 is 39mm by 1mm DIN. LTM is 39mm by 26 turns-per-inch Whitworth. Both FED and Canon got this wrong at first. Do not follow in the footsteps of a firm named after the founder of the Cheka! Marc
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