TTL manual

greenspun.com : LUSENET : Pentax 67 SLR : One Thread

OK, second attempt. What happens with your TTL needle if you are measuring and you switch to manual (e.g. closing the aperture)? In my 67 the needle jumps up, out of the frame. I cannot measure with closed aperture. Can you? Without a automatic lens and ergo no simulation coupling (rings!), I get a reading with the needle, but it is about 3 stops off. I ask this again, because I just read a similar problem on medium format forum, with using macro rings.

-- Peter Gooijer (rockrose@freeler.nl), September 27, 2000

Answers

With my auto lenses, if I use the manual lever, the exposure needle will drop. The correct reading is the one on auto. The manual lever is used on auto lenses when they are disconnected from the body by things like the Helicoid etc. Using the manual lever with an auto lens connected directly to the body with give a false reading. Using the auto lenses with Helicoid and manual lever is the same as using the manual lenses(400, 600, 800 Takumar). In this case, all use stop down metering. BTW, I can meter with closed aperture but it has to satisfy the above requirements. SR

-- Steve Rasmussen (srasmuss@flash.net), September 27, 2000.

I know that my 67II won't meter stopped down. I called Pentax about it and was told that that's the way it is. IMO, it's a design deficiency. Do a search for "stopped down" and you'll find more information on this topic. I don't remember the details right now.

-- Chuck Bernards (chuckb@hevanet.com), September 29, 2000.

Go to the "Pentax 67 SLR" page. Scroll down to the "Uncategorized" heading. Look for "67II stopped down metering accuracy". There is more on this subject there. Bob

-- Bobby Mahaffey (mahajen@prodigy.net), September 29, 2000.

Favor de enviar manual de ttl gracias

-- racsodiaz@yahoo.com (racsodiaz@yahoo.com), March 06, 2002.

Moderation questions? read the FAQ