I believe it has to do with the SMC lenses and the aperture simulator. Bob ----- Original Message ----- From: "Paul Stenquist" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, January 28, 2003 5:33 AM Subject: Re: Question about Mamiya 500 DTL and Lenses
> Didn't mean to imply that you were speculating. But one post in this > thread said that the Mamiya and Pentax lenses weren't interchangeable. > Paul > > Ed Matthew wrote: > > > > I wasn't speculating. I had a 500DTL; I still have a 1000DTL. Both were > > bought before I saw the light. They were damned good - if unrefined - > > cameras. I used Mamiya/Sekor lenses and Super Takumars on both. > > > > Ed > > > > From: Paul Stenquist <[EMAIL PROTECTED]> > > >Reply-To: [EMAIL PROTECTED] > > >To: [EMAIL PROTECTED] > > >Subject: Re: Question about Mamiya 500 DTL and Lenses > > >Date: Mon, 27 Jan 2003 18:06:30 +0000 > > > > > >Okay, enough speculation. I'm heading to my camera closet to dig out the > > >two Mamiya SLRs that are buried there. Let's see, the first is a 1000TL. > > >It's a camera I used for about years, in the late seventies,shooting at > > >least 5000 rolls with it. I probably made more money with that camera > > >than any other I've ever owned, although I was trying harder. But I > > >digress, back to the camera. It has a mechanism for stopping down the > > >lens that appears to be identical to that of the Spotmatic-- i.e. a > > >paddle device at the bottom of the box that pushes a pin on the lens. > > >The 1000 DTL appears to be identical, except for the switch that changes > > >the meter from averaging to spot. The lens is an Auto Mamiya-Sekor > > >55/1.8. It has an auto/manual switch, and it is nearly identical to a > > >Super Takumar 55/1.8, albeit a bit larger. I can mount the lens on a > > >Spotmatic, and -- it works. I bought the DTL in 1990 or thereabouts, > > >thinking it would be fun to own another of these. It lasted about a week > > >before the mirror started sticking, but it's otherwise pretty close to > > >mint. > > >Paul Stenquist > > > > > >Peter Alling wrote: > > > > > > > > his camera. It always p***** me off that he > > > > Actually a friend of mine had a Mamiya 500DTL and the open aperture > > > > metering system was present on could borrow my Takumar's but > > > > I couldn't use any of > > > > his lenses. It may have been that his camera was subject to some kind > > >of > > > > Frankenstein repair that > > > > melded a DTL and a DTX. I don't remember the lenses having an > > >Auto/Manual > > > > switch but then I > > > > never used them. > > > > > > > > At 05:13 PM 1/26/2003 -0600, you wrote: > > > > >The Mamiya > > > > >>M42 mount cameras had a open aperture metering system which not only > > >was > > > > >>different than that adopted by Pentax but could cause damage to the > > >exterior > > > > >>of a Pentax camera if they were mounted. > > > > > > > > > >The above statement applies only to those Mamiya lenses that were > > > > >'redisgned' for the DSX and MSX series. The lenses originally sold with > > > > >the 500DTL and 1000DTL were simply single pin stop-down metering > > >lenses. > > > > >There was no problem with those. The 500DTL/1000DTL and their > > > > >predecessors, the 500TL and the 1000TL were capable of stop=down > > >metering only. > > > > > > > > > >>Also I believe that the Mamiya lenses lacked > > > > >>an auto manual switch which would make their use with a K-M42 adapter > > > > >>good only > > > > >>at maximum aperture unless you wish to preform some custom surgery on > > >the > > > > >>lens. > > > > >>(I could be mistaken about that last point as I haven't looked at any > > >of > > > > >>these > > > > >>lenses or cameras in a while). > > > > > > > > > >You are mistaken. The Mamiya/Sekor lenses as referred to above did have > > > > >the auto/manual switch. > > > > > > > > > >Regards, > > > > >Ed Matthew > > > > > > > > > > > > > > >_________________________________________________________________ > > > > >Tired of spam? Get advanced junk mail protection with MSN 8. > > > > >http://join.msn.com/?page=features/junkmail > > > > > > > > Outside of a dog, a book is man's best friend. > > > > Inside of a dog, it's too dark to read. --Groucho Marx > > > > _________________________________________________________________ > > MSN 8 helps eliminate e-mail viruses. Get 2 months FREE*. > > http://join.msn.com/?page=features/virus >
