Emanuel, yes, but what is correct? 44,50; 44,60; or 44,70 ? The link of Wikipedia I was including was saying, only some months ago: 44,70 mm. Now they mentioned there was an error and corrected to 44,50. I will doublecheck with someone from Rollei again, but any matured data someone has in a service manual will help. Reason for my inquiry is that I have problems with fitting my Zeiss lenses with QBM to a Canon support. The adapter seems to be manufactured too thick. Best regards Dirk Dirk-Roger Schmitt -----Ursprüngliche Nachricht----- Von: rollei_list-bounce@xxxxxxxxxxxxx [mailto:rollei_list-bounce@xxxxxxxxxxxxx] Im Auftrag von Bigler Emmanuel Gesendet: Dienstag, 9. September 2014 14:03 An: rollei_list@xxxxxxxxxxxxx Betreff: [rollei_list] Re: Flange focal distance >>> First, on a couple of websites the number of 44,70 mm is published. >>> Also on Wikipedia this value was published. >>> >>> http://de.wikipedia.org/wiki/Auflagemaß >>> >>> In the meantime, this value was corrected to 44,50 mm, and it is >>> mentioned that the 44,70 mm was published erroneously. >>> >>> So, is there anybody who can confirm the 44,50 mm? >> >> Hallo Dirk-Roger ! According to the various compilations available on the 'net [available does not means realiable : 44.6 mm is mentioned for the QBM ...], the figure of 44,7 mm seems to be the flange focal distance of the Voigtländer Bessamatic. http://www.markerink.org/WJM/HTML/mounts.htm -- Emmanuel --- Rollei List - Post to rollei_list@xxxxxxxxxxxxx - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the subject field OR by logging into www.freelists.org - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field OR by logging into www.freelists.org - Online, searchable archives are available at //www.freelists.org/archives/rollei_list --- Rollei List - Post to rollei_list@xxxxxxxxxxxxx - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the subject field OR by logging into www.freelists.org - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field OR by logging into www.freelists.org - Online, searchable archives are available at //www.freelists.org/archives/rollei_list