K-1 white dot issue. ?

**interested_observer** · 09-17-2016, 08:11 AM

Originally posted by MJKoski

I just exchanged few messages with my dealer about this and switch to loaner unit (which was brand new when I got it) seems possible.

I was just wondering how the serial numbers and the manufacturing dates compare between the two bodies? It's really unfortunate that Pentax screwed the pooch in this way, especially having waited on the K3II fix and the fix to the new lenses, then to introduce the K1. They did have some extra time there - especially when they slid the introduction by at least 6 months.

The other thing is the unevenness of the service across the repair centers. They can capture and recover a lot of goodwill by just stepping up and making things right.

MJKoski · 09-17-2016, 09:20 AM

@Jbox
Original serviced unit.

Snakeisthestuff · 09-17-2016, 09:46 AM

Looks to me as when the calibrating is only for the white dots problem and was never ment to fix the dark band thing.

Unregistered User · 09-17-2016, 10:06 AM

There is a new software version that fixes both. Old version gave mine a dark band. It only had white noise before. New one removed it said repair shop. Well, the mail comes on Tuesday. I will know then.

JBox · 09-17-2016, 12:25 PM

Originally posted by MJKoski

@Jbox
Original serviced unit.

Well that is good news at least!

Originally posted by Tjompen1968

There is a new software version that fixes both. Old version gave mine a dark band. It only had white noise before. New one removed it said repair shop. Well, the mail comes on Tuesday. I will know then.

I really hope this new version resolves the issue(s). Now all we need to do is convince Ricoh USA and Precision to start doing the calibrations as well.

MJKoski · 09-17-2016, 12:27 PM

Pretty surprised that service points are not aware of this in USA.

Gimbal · 09-17-2016, 12:30 PM

So MJKoski, are you saying that you are no longer getting this? (see https://www.pentaxforums.com/forums/190-pentax-k-1/329970-pentax-k-1-owners-i...favor-you.html )

That is a dark shoot, 30sec, iso6400, in camera jpg, everything NR off and neutral.

JBox · 09-17-2016, 12:31 PM

Originally posted by MJKoski

Pretty surprised that service points are not aware of this in USA.

To be fair, I have not contacted them yet, but from what I am reading here, it seems they are not aware of it yet. I will not be able to start the process with them until sometime next week.

MJKoski · 09-17-2016, 02:10 PM

Originally posted by Gimbal

So MJKoski, are you saying that you are no longer getting this? (see https://www.pentaxforums.com/forums/190-pentax-k-1/329970-pentax-k-1-owners-i...favor-you.html )

That is a dark shoot, 30sec, iso6400, in camera jpg, everything NR off and neutral.

The attached image is so small it is hard to say anything about it. Sony 36MP chip will always have some white dots at higher ISO values as I noted when browsing thru old archives of D800E, D810 and A7r1 images.

My original unit before service gave me dot spectacle with ISO100, 30 seconds and pushed 2-3 stops. That is fixed now.

stevebrot · 09-17-2016, 05:20 PM

Originally posted by Snakeisthestuff

Looks to me as when the calibrating is only for the white dots problem and was never ment to fix the dark band thing.

Two different, but possibly related, problems with similar fixes. Both require low-level calibration adjustments to the sensor.

Steve

mir156 · 09-18-2016, 12:39 AM

Originally posted by JBox

To be fair, I have not contacted them yet, but from what I am reading here, it seems they are not aware of it yet. I will not be able to start the process with them until sometime next week.

My unit arrived at precisioncamera on Friday. We will see how they handle the problem.

Unregistered User · 09-20-2016, 11:13 AM

Well, got the camera today and here is the result....

After and Before...

DeadJohn · 09-20-2016, 12:52 PM

Originally posted by Tjompen1968

Well, got the camera today and here is the result.... After and Before...

The after (top photo) looks better.

Fewer white blotches. If I view the largest copy you have on Flickr (2048x1366) there are fewer white spots, and the spots tend to be smaller. Still more spots than I hope to see at ISO 100.
More natural looking. Both photos were done with auto white balance? Did you process them the same way?

Note that the exposure lengths are close but not the same. 861 seconds vs 908 seconds.

Unregistered User · 09-20-2016, 01:32 PM

Originally posted by DeadJohn

The after (top photo) looks better.

Fewer white blotches. If I view the largest copy you have on Flickr (2048x1366) there are fewer white spots, and the spots tend to be smaller. Still more spots than I hope to see at ISO 100.
More natural looking. Both photos were done with auto white balance? Did you process them the same way?

Note that the exposure lengths are close but not the same. 861 seconds vs 908 seconds.

They are processed a little different and with WB adjusted in post.

I find the amount of white noise to be way, way, way, to much. I have never seen this on my K-5 or K-3.

If I use LENR it will improve dramatically. But from never having had to use LENR to must use LENR is not very fun. Hopefully the cold climate will lessen the problem.

JBox · 09-20-2016, 02:11 PM

Originally posted by Tjompen1968

Well, got the camera today and here is the result....

After and Before...

Hmm... Does still seem like a lot of dots. Have you tried the dark band test? Any improvement there?

09-17-2016, 02:10 PM	#279
MJKoski Veteran Member Join Date: Aug 2016 Posts: 1,784	Originally posted by Gimbal So MJKoski, are you saying that you are no longer getting this? (see https://www.pentaxforums.com/forums/190-pentax-k-1/329970-pentax-k-1-owners-i...favor-you.html ) That is a dark shoot, 30sec, iso6400, in camera jpg, everything NR off and neutral. The attached image is so small it is hard to say anything about it. Sony 36MP chip will always have some white dots at higher ISO values as I noted when browsing thru old archives of D800E, D810 and A7r1 images. My original unit before service gave me dot spectacle with ISO100, 30 seconds and pushed 2-3 stops. That is fixed now. Last edited by MJKoski; 09-17-2016 at 02:21 PM.

09-20-2016, 12:52 PM	#283
DeadJohn Pentaxian Join Date: Jan 2011 Location: New York Posts: 4,834	Originally posted by Tjompen1968 Well, got the camera today and here is the result.... After and Before... The after (top photo) looks better. Fewer white blotches. If I view the largest copy you have on Flickr (2048x1366) there are fewer white spots, and the spots tend to be smaller. Still more spots than I hope to see at ISO 100. More natural looking. Both photos were done with auto white balance? Did you process them the same way? Note that the exposure lengths are close but not the same. 861 seconds vs 908 seconds.

09-20-2016, 01:32 PM	#284
Unregistered User Guest	Originally posted by DeadJohn The after (top photo) looks better. Fewer white blotches. If I view the largest copy you have on Flickr (2048x1366) there are fewer white spots, and the spots tend to be smaller. Still more spots than I hope to see at ISO 100. More natural looking. Both photos were done with auto white balance? Did you process them the same way? Note that the exposure lengths are close but not the same. 861 seconds vs 908 seconds. They are processed a little different and with WB adjusted in post. I find the amount of white noise to be way, way, way, to much. I have never seen this on my K-5 or K-3. If I use LENR it will improve dramatically. But from never having had to use LENR to must use LENR is not very fun. Hopefully the cold climate will lessen the problem.

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09-17-2016, 08:11 AM	#271
interested_observer Loyal Site Supporter Join Date: Jun 2009 Location: Tumbleweed, Arizona Photos: Gallery \| Albums Posts: 5,707	Originally posted by MJKoski I just exchanged few messages with my dealer about this and switch to loaner unit (which was brand new when I got it) seems possible. I was just wondering how the serial numbers and the manufacturing dates compare between the two bodies? It's really unfortunate that Pentax screwed the pooch in this way, especially having waited on the K3II fix and the fix to the new lenses, then to introduce the K1. They did have some extra time there - especially when they slid the introduction by at least 6 months. The other thing is the unevenness of the service across the repair centers. They can capture and recover a lot of goodwill by just stepping up and making things right.

09-17-2016, 09:20 AM	#272
MJKoski Veteran Member Join Date: Aug 2016 Posts: 1,784	@Jbox Original serviced unit.

09-17-2016, 09:46 AM	#273
Snakeisthestuff Senior Member Join Date: Jul 2011 Photos: Gallery Posts: 136	Looks to me as when the calibrating is only for the white dots problem and was never ment to fix the dark band thing.

09-17-2016, 10:06 AM	#274
Unregistered User Guest	There is a new software version that fixes both. Old version gave mine a dark band. It only had white noise before. New one removed it said repair shop. Well, the mail comes on Tuesday. I will know then.

09-17-2016, 12:25 PM	#275
JBox Senior Member Join Date: Aug 2011 Location: Michigan Posts: 109	Originally posted by MJKoski @Jbox Original serviced unit. Well that is good news at least! Originally posted by Tjompen1968 There is a new software version that fixes both. Old version gave mine a dark band. It only had white noise before. New one removed it said repair shop. Well, the mail comes on Tuesday. I will know then. I really hope this new version resolves the issue(s). Now all we need to do is convince Ricoh USA and Precision to start doing the calibrations as well.

09-17-2016, 12:27 PM	#276
MJKoski Veteran Member Join Date: Aug 2016 Posts: 1,784	Pretty surprised that service points are not aware of this in USA.

09-17-2016, 12:30 PM	#277
Gimbal Pentaxian Join Date: Apr 2007 Location: Sweden Posts: 2,106 Original Poster	So MJKoski, are you saying that you are no longer getting this? (see https://www.pentaxforums.com/forums/190-pentax-k-1/329970-pentax-k-1-owners-i...favor-you.html ) That is a dark shoot, 30sec, iso6400, in camera jpg, everything NR off and neutral.

09-17-2016, 12:31 PM	#278
JBox Senior Member Join Date: Aug 2011 Location: Michigan Posts: 109	Originally posted by MJKoski Pretty surprised that service points are not aware of this in USA. To be fair, I have not contacted them yet, but from what I am reading here, it seems they are not aware of it yet. I will not be able to start the process with them until sometime next week.

09-17-2016, 05:20 PM	#280
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by Snakeisthestuff Looks to me as when the calibrating is only for the white dots problem and was never ment to fix the dark band thing. Two different, but possibly related, problems with similar fixes. Both require low-level calibration adjustments to the sensor. Steve

09-18-2016, 12:39 AM	#281
mir156 New Member Join Date: Mar 2016 Posts: 17	Originally posted by JBox To be fair, I have not contacted them yet, but from what I am reading here, it seems they are not aware of it yet. I will not be able to start the process with them until sometime next week. My unit arrived at precisioncamera on Friday. We will see how they handle the problem.

09-20-2016, 11:13 AM	#282
Unregistered User Guest	Well, got the camera today and here is the result.... After and Before...

09-20-2016, 02:11 PM	#285
JBox Senior Member Join Date: Aug 2011 Location: Michigan Posts: 109	Originally posted by Tjompen1968 Well, got the camera today and here is the result.... After and Before... Hmm... Does still seem like a lot of dots. Have you tried the dark band test? Any improvement there?