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05-15-2016, 06:38 AM   #1
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K-3 shutter behavior

Yesterday my K-3 repeatedly (three times) went into an uncontrolled machine-gun-like shutter firing condition, and did not record the photo that I was attempting to shoot. This occurred in at the time of a low-battery condition in my third-party grip. The grip at the time was loaded with alkaline batteries. I also note alkaline batteries in this grip do not last well at all, for perhaps 200 photos before becoming completely discharged. I have no idea if the discharged batteries are related to the machine-gun-like shutter firing. The only way to stop the shutter firing is to turn off the camera, and then after another 5 seconds the shutter firing stops and the camera is in an off mode

I would appreciate any comments or suggestion on this situation.

05-15-2016, 06:58 AM   #2
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This is a known issue. Make sure your firmware is up to date, RIcoh released a 'fix' that allows the camera to exit gracefully though it does not stop this from happening. It is usually quite rare, it happened to me maybe 3 times over two years. And seems to be, but not always related to battery condition. Unless it happens with regularity there is nothing to be done. If it starts to happen often, it might require a repair.

Third party grips also seem to be related to a number of odd behaviors, based on what I have read here. I'm not a grip user so that is just from other people's reports.

As to batteries, most people seem to have good luck with the Eneloop rechargeable brand. Other rechargeables and regular alkaline batteries do not perform very well. This appears to be related to 'discharge rate' and whether the battery can maintain a high enough voltage when under load. Common batteries will see a voltage drop when under load, not an issue with a flashlight but the camera senses the low voltage and considers the battery discharged. Eneloops seem to be able to maintain a proper voltage under a higher load.
05-15-2016, 07:36 AM   #3
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QuoteOriginally posted by jatrax Quote
This is a known issue. Make sure your firmware is up to date, RIcoh released a 'fix' that allows the camera to exit gracefully though it does not stop this from happening. It is usually quite rare, it happened to me maybe 3 times over two years. And seems to be, but not always related to battery condition. Unless it happens with regularity there is nothing to be done. If it starts to happen often, it might require a repair.

Third party grips also seem to be related to a number of odd behaviors, based on what I have read here. I'm not a grip user so that is just from other people's reports.

As to batteries, most people seem to have good luck with the Eneloop rechargeable brand. Other rechargeables and regular alkaline batteries do not perform very well. This appears to be related to 'discharge rate' and whether the battery can maintain a high enough voltage when under load. Common batteries will see a voltage drop when under load, not an issue with a flashlight but the camera senses the low voltage and considers the battery discharged. Eneloops seem to be able to maintain a proper voltage under a higher load.
Thank you for these very informative comments. I will follow-up accordingly.
05-15-2016, 08:26 AM   #4
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As jatrax says, a firmware upgrade may indicated. The firmware fix is not really a fix. it detects when the runaway starts and aborts the exposure as a lost shot. The real fix requires a trip to a service facility where they re-flash the low level firmware on one of the hardware components. If your camera is still on warranty, Ricoh/Pentax will cover the repair. Good luck!


Steve

05-15-2016, 10:46 AM   #5
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Low battery voltage certainly increases the likelihood of both mirror flop and freezes, so I wouldn't be too worried, especially since you were using the third-party grip. Even with the genuine grip, the power implementation isn't perfect.

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05-15-2016, 02:00 PM   #6
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I had this same issue with an older third party lithium battery that was installed in the camera itself. It vanished as soon as I replaced the battery with a freshly charged unit.
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