K20D banding issue

Phaser · 03-14-2010, 01:43 PM

Was out to take a night shot today.

F4 iso 100 30sec Jpg 100% crop (same all over the photo exept the horisontal band)
Name: banding.JPG
Views: 1137
Size: 308.3 KB

Name: banding.JPG
Views: 1137
Size: 308.3 KB

I had it repairedfor this about a year ago when it stil was under waranty. I haven't seen any banding before now. But this is the worst i ever had

I hope it want show up again

Phaser · 03-16-2010, 02:37 PM

I posted this because a while ago there was much writing about this problems. Now it seems calm. Anyon know if Pentax has found a fix for this and what it is?

sterretje · 03-16-2010, 08:24 PM

I assume they replaced the sensor a year ago? So there should be a warranty on that repair which might well be a year. Check your documentation regarding the repair and/or contact Pentax.

Damn Brit · 03-16-2010, 08:31 PM

Can you post the complete picture?

Did you have a grip on the camera? I seem to remember talk a long time ago (pre k20) I think that when the horizontal and vertical banding appear together, it was caused by some kind of interference from the grip. I think it was related to the ON/OFF switch on the grip not being switched in the correct position (neither ON or OFF).

vizjerei · 03-16-2010, 08:48 PM

Do you have the latest firmware installed?

jmbradd · 03-16-2010, 09:03 PM

wow i had never really thought this might be an "issue". There were times where the bands of noise in my shots were insane. I thought it was just the camera's capability (or lack thereof) so i never thought too much of it. I even felt a lot of iso 400 were not acceptable. Recently though i've been shooting iso 1600 and it hasn't been horrible at all (also exposing better I guess).

I'll see if I can do some tests with the grip to create problems later

Damn Brit · 03-16-2010, 09:06 PM

Originally posted by jmbradd

I'll see if I can do some tests with the grip to create problems later

I haven't heard of the issue with the grip for a long time, it's possible that whatever caused it in early batches was dealt with.

Phaser · 03-17-2010, 12:51 AM

Originally posted by Damn Brit

Can you post the complete picture?

Did you have a grip on the camera?

Here is the picture. A night sceene
Name: banding full.jpg
Views: 622
Size: 25.8 KB

No Grip

Originally posted by vizjerei

Do you have the latest firmware installed?

I've got 1.03

Originally posted by sterretje

I assume they replaced the sensor a year ago? So there should be a warranty on that repair which might well be a year. Check your documentation regarding the repair and/or contact Pentax.

I was told the sensor was replaced. So far this is the only photo with banding since last repair, Should i make a complain to pentax about it?

sterretje · 03-17-2010, 02:08 AM

If you're still inside the warranty for the part, I suggest that you at least inform them (with proof); it's what I would do. If you wait till outside the warranty, you more than likely have to pay.

03-14-2010, 01:43 PM	#1
Phaser Forum Member Join Date: Jun 2008 Location: Norway Photos: Gallery Posts: 73	K20D banding issue Was out to take a night shot today. F4 iso 100 30sec Jpg 100% crop (same all over the photo exept the horisontal band) I had it repairedfor this about a year ago when it stil was under waranty. I haven't seen any banding before now. But this is the worst i ever had I hope it want show up again

03-17-2010, 12:51 AM	#8
Phaser Forum Member Join Date: Jun 2008 Location: Norway Photos: Gallery Posts: 73 Original Poster	Originally posted by Damn Brit Can you post the complete picture? Did you have a grip on the camera? Here is the picture. A night sceene No Grip Originally posted by vizjerei Do you have the latest firmware installed? I've got 1.03 Originally posted by sterretje I assume they replaced the sensor a year ago? So there should be a warranty on that repair which might well be a year. Check your documentation regarding the repair and/or contact Pentax. I was told the sensor was replaced. So far this is the only photo with banding since last repair, Should i make a complain to pentax about it? Last edited by Phaser; 03-17-2010 at 01:12 AM.

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03-16-2010, 02:37 PM	#2
Phaser Forum Member Join Date: Jun 2008 Location: Norway Photos: Gallery Posts: 73 Original Poster	I posted this because a while ago there was much writing about this problems. Now it seems calm. Anyon know if Pentax has found a fix for this and what it is?

03-16-2010, 08:24 PM	#3
sterretje Veteran Member Join Date: Dec 2008 Location: Roodepoort, South Africa Photos: Gallery \| Albums Posts: 3,561	I assume they replaced the sensor a year ago? So there should be a warranty on that repair which might well be a year. Check your documentation regarding the repair and/or contact Pentax.

03-16-2010, 08:31 PM	#4
Damn Brit Guest	Can you post the complete picture? Did you have a grip on the camera? I seem to remember talk a long time ago (pre k20) I think that when the horizontal and vertical banding appear together, it was caused by some kind of interference from the grip. I think it was related to the ON/OFF switch on the grip not being switched in the correct position (neither ON or OFF).

03-16-2010, 08:48 PM	#5
vizjerei Veteran Member Join Date: May 2007 Location: Toronto Photos: Gallery Posts: 1,418	Do you have the latest firmware installed?

03-16-2010, 09:03 PM	#6
jmbradd Veteran Member Join Date: Feb 2009 Location: Portland, OR Photos: Albums Posts: 325	wow i had never really thought this might be an "issue". There were times where the bands of noise in my shots were insane. I thought it was just the camera's capability (or lack thereof) so i never thought too much of it. I even felt a lot of iso 400 were not acceptable. Recently though i've been shooting iso 1600 and it hasn't been horrible at all (also exposing better I guess). I'll see if I can do some tests with the grip to create problems later

03-16-2010, 09:06 PM	#7
Damn Brit Guest	Originally posted by jmbradd I'll see if I can do some tests with the grip to create problems later I haven't heard of the issue with the grip for a long time, it's possible that whatever caused it in early batches was dealt with.

03-17-2010, 02:08 AM	#9
sterretje Veteran Member Join Date: Dec 2008 Location: Roodepoort, South Africa Photos: Gallery \| Albums Posts: 3,561	If you're still inside the warranty for the part, I suggest that you at least inform them (with proof); it's what I would do. If you wait till outside the warranty, you more than likely have to pay.