I indicated in an earlier post that I had two versions of the Adaptall KA adapter, this was in error. I have two _slightly different variations_, the one that would show a maximum aperture of f/4.0 now works properly. It wasn't different, it was broken! ;-) The biggest difference in the two is that one has larger A contacts and isn't as picky as to position shifts on the body.
BTW: They are a giant, royal, big time PITA to work on! Don > -----Original Message----- > From: Fred [mailto:[EMAIL PROTECTED] > Sent: Saturday, October 22, 2005 4:30 PM > To: Jens Bladt > Subject: Re: Tamron P/KA on Pentax D cameras > > > Hi, Jens. > > > I'm not quite sure about what you mean, Fred. Perhaps there are more > > Adaptall mounts than I know of. I didn't know there was a non-A > > Adaptall-2 mount. > > There indeed are pre-Ka K-mount Adaptall 2 lens mounts. In fact, I would > say that they are even more common (and certainly cheaper) than the Ka > versions of the Adaptall 2 mounts (at least, judging by that final > authority known as "eBay" - <g>). In any event, I've got at > least a couple > of K (pre-Ka) versions (easily recognizable since they lack any electrical > contacts on the mount flange), but only one Ka version (with electrical > contacts on the flange). > > > I have just tried my Adaptall-2 mount (which I BTW bought from a fellow > > PDML'er Jim Colwell) on one of my two Tamron lenses with the > "AE" marking. > > It's the Tamron 3.5/70-150mm, which BTW is a nice portrait lens > - and the > > *ist D. > > It seems that matrix metering is supported - the EXIF says "Pattern". > > Also, unlike K-lenses, there's info about the aperture used, but not the > > focal length. > > That's encouraging news, Jens. As I said in my last post, I will have to > do some experimenting (if I can ever find my Ka version mount, which seems > like it's hiding someplace...). > > I did take a look at my SD 70-150/2.5 Soft lens, and it does > indeed have an > AE setting on the aperture ring, but I think that my SD 300/5.6 does not. > > The 70-150/2.8 also makes a nice portrait lens, and with built-in variable > soft focusing (from full sharpness to moderate softness) as a nice bonus. > > Fred >
