You can see the Rolleiflex 3.5B or MX-EVS with the first EVS version, mentioned in my post, in one of my blogs; it's the rare model with the word "Germany" in the diaphragm wheel; it's the finfth image (click on the thumbnail): http://dobleobjetivo.blogspot.com.ar/2006/10/rollei-news-7-1954-brochure.html Carlos 2014-05-18 8:21 GMT-03:00 CarlosMFreaza <cmfreaza@xxxxxxxxx>: > I can answer about the MX-EVS taking info from Prochnow Rollei Report > II and my own experience. The MX-EVS is the 3.5B for this author, he > does not distinguish Type 1 or Type 2 but there are some differences > within this model, enough for other authors to distinguish 1 and 2. > This was the first Rolleiflex TLR with EVS system, it was manufactured > between April 1954 till September 1956, there were two serial numbers > blocks for this camera:1,428,000 till 1,499,999 and 1,700,000 till > 1,737,999.- 94,000 3.5B or MX-EVS were manufactured. The camera was > provided with three different taking lens:Tessar 3.5/75 (Carl Zeiss > Jena), Opton Tessar 3.5/75 (Carl Zeiss Oberkochen), Xenar 3.5/75 > (Schneider). This camera used the linear Synchro Compur CR00 MX for > the EVS for the first time in a Rolleiflex. From the camera serial > number 1,700,000 (starting the second serial numbers block) were > introduced improvements for the EVS, f.e. the neutral or free > position. For the author Evans these improvements are enough to call > the 3.5B "MX-EVS Type 2" from the serial number 1,700,000.- > > There were three technical moments for the EVS development. We can > find the first moment in the firsts 3.5B or MX-EVS Type 1 cameras, > these cameras don't have the middle button in the diaphragm wheel to > lock-unlock the system, these cameras are from the serial number > 1,428,000 till 1,464,000 (this complete block is till 1,499,999). Some > of these rare firsts MX-EVS have the word "Germany" in the diaphragm > wheel, Prochnow shows a photograph in 16-358. I think this camera is > rare today, the serial numbers block is shared with the 2.8C.- The > second technical moment for the EVS was the central button that you > need to maintain pressed to unlock the EVS, it was added from the > serial numbers 1,464,000 till 1,499,999, I think this camera is well > known and in general the users indentify it as "MX-EVS type 1", but > really it is a second EVS evolution. Prochnow shows a front panel > photograph also in 16-358.- The 3.5B "MX-EVS" Type 2 (according Evans > name) has the EVS mechanism more perfectioned with the free wheel or > neutral wheel position, avoiding to maintain pressed the button to > unlock the EVS, this system is also used in the 2.8D, E, 3,5E and > other Rolleiflex models (some Rolleicords and T also have EVS but the > means to set it are different), this is a third evolution, Prochnow > shows a front panel also in 16-358. This evolution started in the > second serial numbers block for the 3.5B, 1,700,000 till 1,737,999.- > > Carlos > > 2014-05-18 0:05 GMT-03:00 Evan Dong <dmarc-noreply@xxxxxxxxxxxxx>: >> I have a question that I was unable to locate any information for a 10 blade >> aperture Rolleiflex TLR other than the 2.8C. >> >> I have a Rolleiflex MX-EVS Type 1 that has a round blade formation, rather >> the pentagon shape usually encountered. >> >> What information is available for the other than a 2.8C Rolleiflex? >> >> >> Evan Dong >> --- 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