Pentax *istD not detecting aperture setting and not taking photos.

wolf · 06-08-2008, 04:41 PM

Well, I got that memory card problem solved (a CF card wasn't necessary but the camera doesn't work with any capacity larger than 1 Gig as Photo Tramp had suggested).

Now the new problem is the camera doesn't detect the lens aperture. (I'm assuming that's what F-- in the viewfinder means). I'm also guessing that the camera isn't detecting the lens at all. Needless to say the camera doesn't even take photos. (I tried 2 other lenses and got the same results.)

Any idea what is causing the new problem ?
Thanks.

daacon · 06-08-2008, 05:48 PM

I just picked up and istD and with Firmware 1.12 (available on Pentax Site) I am using a 4gb Sandisk CF card. As for your other issue not sure ....

Wheatfield · 06-08-2008, 07:12 PM

Originally posted by wolf

Well, I got that memory card problem solved (a CF card wasn't necessary but the camera doesn't work with any capacity larger than 1 Gig as Photo Tramp had suggested).

Now the new problem is the camera doesn't detect the lens aperture. (I'm assuming that's what F-- in the viewfinder means). I'm also guessing that the camera isn't detecting the lens at all. Needless to say the camera doesn't even take photos. (I tried 2 other lenses and got the same results.)

Any idea what is causing the new problem ?
Thanks.

Try cleaning the electrical contacts on the lens mount. I use a clean pencil eraser for this, keeping the body positioned in such a way that stray rubber bits that may scrape off can't fall into the camera, though you shouldn't be rubbing all that hard anyway. This is presuming that you are using A series or later lenses with the aperture ring in the A position. If you are using a non A series lens, or have the aperture off the A position, then you are seeing normal behaviour.

06-08-2008, 04:41 PM	#1
wolf New Member Join Date: Apr 2008 Location: Boston Posts: 8	*Pentax istD not detecting aperture setting and not taking photos.** Well, I got that memory card problem solved (a CF card wasn't necessary but the camera doesn't work with any capacity larger than 1 Gig as Photo Tramp had suggested). Now the new problem is the camera doesn't detect the lens aperture. (I'm assuming that's what F-- in the viewfinder means). I'm also guessing that the camera isn't detecting the lens at all. Needless to say the camera doesn't even take photos. (I tried 2 other lenses and got the same results.) Any idea what is causing the new problem ? Thanks.

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06-08-2008, 05:48 PM	#2
daacon Veteran Member Join Date: Mar 2007 Location: Alberta,Canada Photos: Gallery Posts: 20,914	I just picked up and istD and with Firmware 1.12 (available on Pentax Site) I am using a 4gb Sandisk CF card. As for your other issue not sure ....

06-08-2008, 07:12 PM	#3
Wheatfield Moderator Join Date: Apr 2008 Location: The wheatfields of Canada Posts: 15,981	Originally posted by wolf Well, I got that memory card problem solved (a CF card wasn't necessary but the camera doesn't work with any capacity larger than 1 Gig as Photo Tramp had suggested). Now the new problem is the camera doesn't detect the lens aperture. (I'm assuming that's what F-- in the viewfinder means). I'm also guessing that the camera isn't detecting the lens at all. Needless to say the camera doesn't even take photos. (I tried 2 other lenses and got the same results.) Any idea what is causing the new problem ? Thanks. Try cleaning the electrical contacts on the lens mount. I use a clean pencil eraser for this, keeping the body positioned in such a way that stray rubber bits that may scrape off can't fall into the camera, though you shouldn't be rubbing all that hard anyway. This is presuming that you are using A series or later lenses with the aperture ring in the A position. If you are using a non A series lens, or have the aperture off the A position, then you are seeing normal behaviour.