>>>Hi, I have Tamron 135 mm f2.8 lense with P/KA adaptal mount. It tends to overexpose with both of my bodies (MZ-5n and Z-1p). Overexposure is at least 1 stop. Does anyone else has such a trouble with Tamron adaptals?
Kari<<< Kari, Four or five years ago I had a similar experience with some of my Pentax A lenses when shooting them in Hyperprogam mode on my PZ-1 and PZ-1p. The only lens I specifically remember was a Pentax A 70-210 f4 but I believe I had at least a few other lenses that produced overexposed slides (1 to 1.5 stops). This did not seem to happen if the camera was in center weight metering (I can not remember about spot). You can always set your camera to compensate by under exposing but I found the simplest thing to do was to put the body on center weight metering when using non F or FA lenses. I can not remember if I noticed this on my ZX-5n. This was discussed by members of this group 4 or 5 years ago but that was back when Pentax Discuss was on the Pentax web site and I would assume those proceeding have long since been lost, forever lost in cyberspace. Even if they do exist I would think they would be very hard to find. The two thing I remember from these discussions where (1) Not everyone experienced the problem and (2) When overexposure did happen, the most commonly proposed cause was a difference in the programing of the PZ series bodies compared to earlier ones (those with chips of course). As I said earlier, I think this was unique to Hyper Program Mode. All of this rambling assumes you are shooting slides and have the camera in Hyper Program. If you are doing these thing, try a roll on center wieght metering. Good Luck. George Baumgardner - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
