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02-18-2016, 05:04 PM   #1
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Frozen Aperture control K-50

Hello all new to the forum but not new to Pentax.

I had a Pentax K-200 and have a K-2000 and K-50.

A few months ago I noticed the K-50 occasionally not responding to the aperture control after a shot while in Aperture priority mode with Pentax-A and Pentax AF lenses. Now the aperture control stops responding after each shot, If you switch the mode wheel, turn the camera on and off or go to the menu it starts responding again but as soon as you take shot stops again.

Olympus m4/3 is my primary camera and Sony A7 is used for subject isolation so sadly the aps-c Pentax's just sit in a drawer most of the time so I don't know if this issue is progressive or just started all at once. I hope it is a setting or that there is some simple method of using aperture priority mode the only mode I shoot in in any format other than point and shoot. I dumped my Pentax-M lenses and acquired additional Pentax-A and AF lenses so this is a frustrating issue on top of the issues with using manual focus with DSLR and OVF. I may as well have kept the great Pentax-M lenses and used them full frame on the A7 and 1/4 frame on Oly's, although in some situations if I use a tripod with 500 and 1000mm lenses I can actually get better image quality out of the Pentax than the great OM-D which in turn completely wallops the A7 in almost all situations and of course makes canons and nikons seem like useless toys.

Thanks in advance.

02-18-2016, 05:53 PM   #2
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Luckily this sounds like a simple problem associated with the default camera behavior.

Turn off instant review, or half-press before trying to turn the aperture wheel

Alternatively, you can map the aperture control to the front dial so that it responds even when in instant review.

Hope this helps!
02-19-2016, 04:27 PM   #3
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Thanks so much for the quick reply Adam I really love this camera hands down the best aps-c dslr buy. As far as half depressing the shutter button I believe that always used to work to regain aperture control but it no longer does unless my memory fails me. I dug through the settings and the instant review tip did not return dial function. I went into other modes like shutter priority and manual mode and tried the exposure button and found the all froze aftein camera r taking a picture regardless of display/live view settings and of course loosing manual mode and speed priority is not good worse than being stuck at a fixed aperture as no the camera is useless except for the same exposure.

I went to metering time and changed the setting from 10 seconds (apparently default) to 3 and presto chango after 3 seconds I gain control over the camera so now it is entirely usable although with a 3 second delay. It seems like it used to respond after a shutter half click so there still seems to be something wrong with the camera or settings. If it had not been sitting in a drawer for a couple of months I would certainly have noticed a major change that's why I contacted Pentax forums to contact others familiar with the K50.
02-19-2016, 04:34 PM   #4
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That's very strange, because the e-dial should respond immediately unless the camera is in instant review mode...

I would try performing a full settings reset (via the setup menu) to see if something else is maybe getting in the way.

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