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10-05-2018, 09:22 AM   #16
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QuoteOriginally posted by CodyH Quote
Just saw this thread and wanted to join to reply. Bought my K70 Sept 17, 2017 and have take around 3400 photos. Mine failed last week. Looks like aperture block failure as well, but mine went all at once and never intermittently came and went. Very disappointing.
Could you post a couple of dark images from it?

Evidence of actual problem with K70 would be very good.

10-05-2018, 09:26 AM   #17
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QuoteOriginally posted by reh321 Quote
Has anyone taken a K-70 apart and actually looked at the mechanism?
That is the only way to be certain it is the same mechanism.
This would be the only way to find out, but I don't think anyone will do this anytime soon, since the majority of them will be under warranty.
10-05-2018, 09:38 AM   #18
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QuoteOriginally posted by The Squirrel Mafia Quote
This would be the only way to find out, but I don't think anyone will do this anytime soon, since the majority of them will be under warranty.
Hopefully, the accompanying paperwork will be informative, and someone will share that information with us.
10-05-2018, 09:51 AM - 1 Like   #19
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It is unfortunate that neither owner checked the actual aperture to confirm the source of the failure. The OP stated that metering was funky, but that could be taken several ways. The gold standard for diagnosing aperture block failure is to put the camera in M mode (auto ISO off, aperture ring not being used) with aperture set wide open and shutter speed at something slow (e.g. 1-2 seconds). Release the shutter while observing the aperture opening through the front of the lens.* Anything other than the aperture remaining wide open is indication of a problem with the controller. If the problem has been intermittent, it may help to do the test after a period of non-use. Even one failure is significant.

Edit and contrition: I forgot to review @CodyH 's posts on other threads regarding their problems. As it turns out they did check actual aperture function and have contacted Ricoh/Pentax for warranty service. The contrition is that I was part of the discussion on the other thread and did not double check that it was not the same user.


Steve

* This method was instrumental in diagnosing the initial wave of aperture block failures on the K-30 and narrowing the cause to a fault in a mechanical component rather than electronics.


Last edited by stevebrot; 10-05-2018 at 01:12 PM.
10-05-2018, 11:21 AM   #20
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QuoteOriginally posted by stevebrot Quote
It is unfortunate that neither owner checked the actual aperture to confirm the source of the failure. The OP stated that metering was funky, but that could be taken several ways. The gold standard for diagnosing aperture block failure is to put the camera in M mode (auto ISO off, aperture ring not being used) with aperture set wide open and shutter speed at something slow (e.g. 1-2 seconds). Release the shutter while observing the aperture opening through the front of the lens.* Anything other than the aperture remaining wide open is indication of a problem with the controller. If the problem has been intermittent, it may help to do the test after a period of non-use. Even one failure is significant.

Steve

* This method was instrumental in diagnosing the initial wave of aperture block failures on the K-30 and narrowing the cause to a fault in a mechanical component rather than electronics.
Isn't this the method @CodyH reported four days ago?
QuoteOriginally posted by CodyH Quote
Yes aperture block failure of some kind. I've tested 3 lenses on it and set shutter speed to 2 seconds and looking down the lens from the front there is no difference in the aperture blades(they close all the way down) regardless of setting. All pictures are very dark even outside on ISO3200. Sad thing is I'm 15 days out of warranty. Now I'm not a professional or a camera tech, but from everything Ive read, that's what I'm dealing with.
10-05-2018, 01:06 PM   #21
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QuoteOriginally posted by reh321 Quote
Isn't this the method @CodyH reported four days ago?
Yes, I do believe it is. Thanks for reminding me that it is the same CodyH from both threads. They did confirm an aperture control issue that will hopefully be repaired under warranty. I guess that is one of the hazards of cross-posting an issue on multiple threads. The other larger issue is that such amplifies an isolated issue into "multiple reports on the web".

To the best of my knowledge, CodyH's report is the first verified for the K-70 for aperture control issues on this site. With any luck their camera will be repairable at no cost and it will be reported back here (or on the other thread) what parts were replaced.


Steve

(...previous comment edited...)

Last edited by stevebrot; 10-05-2018 at 01:13 PM.
10-05-2018, 07:41 PM - 1 Like   #22
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QuoteOriginally posted by reh321 Quote
Could you post a couple of dark images from it?

Evidence of actual problem with K70 would be very good.
If i still have any on my memory card i'd be happy to post them and would most likely do it on the new post made by @Stevebrot about under exposed photos on the K70

QuoteOriginally posted by reh321 Quote
Hopefully, the accompanying paperwork will be informative, and someone will share that information with us.
I will share any information that the repair shop provides me.

QuoteOriginally posted by stevebrot Quote
Yes, I do believe it is. Thanks for reminding me that it is the same CodyH from both threads. They did confirm an aperture control issue that will hopefully be repaired under warranty. I guess that is one of the hazards of cross-posting an issue on multiple threads. The other larger issue is that such amplifies an isolated issue into "multiple reports on the web".

To the best of my knowledge, CodyH's report is the first verified for the K-70 for aperture control issues on this site. With any luck their camera will be repairable at no cost and it will be reported back here (or on the other thread) what parts were replaced.


Steve

(...previous comment edited...)
Yes, I apologize for making duplicate posts. I was responding to 2 separate threads and was frustrated shortly after the failure occurred. I have sent the camera off to Precision Camera and contacted Ricoh USA and they have contacted Precision on my behalf. I will provide all further updates and information on the new post about the concern.
10-05-2018, 08:48 PM   #23
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QuoteOriginally posted by CodyH Quote
I have sent the camera off to Precision Camera and contacted Ricoh USA and they have contacted Precision on my behalf. I will provide all further updates and information on the new post about the concern.
Yay! I hope they can fix it for you without charge and that can find out what went wrong.


Steve

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