Foreign object somewhere in camera

Photogoof · 07-27-2009, 11:43 AM

This is driving me nuts.

Every time I shoot with my K10D, a black mark shows up in the upper right-hand corner of the frame. I've cleaned the lens, I've taken the filter off the lens and cleaned both sides of it, I've cleaned the other end of the lens, I've even wiped off the internal mirror.

It's still there. Has anyone else had this problem?

cbaytan · 07-27-2009, 11:47 AM

Originally posted by Photogoof

Every time I shoot with my K10D, a black mark shows up in the upper right-hand corner of the frame. I've cleaned the lens, I've taken the filter off the lens and cleaned both sides of it, I've cleaned the other end of the lens, I've even wiped off the internal mirror.

It's still there. Has anyone else had this problem?

Ever tried blowing sensor with air with a decent blower yet?

Best wishes.
Can

wildlifephotog · 07-27-2009, 11:47 AM

Sample photo?
Sounds like possible dust on sensor.

mtroute · 07-27-2009, 11:51 AM

Originally posted by Photogoof

This is driving me nuts.

Every time I shoot with my K10D, a black mark shows up in the upper right-hand corner of the frame. I've cleaned the lens, I've taken the filter off the lens and cleaned both sides of it, I've cleaned the other end of the lens, I've even wiped off the internal mirror.

It's still there. Has anyone else had this problem?

The hand of God? Oh wait, does the line always show up through someones body? If so you may want to watch the movie "The Omen" and see what caused that problem, maybe yours is similar.

Seriously though a sample would be helpful.

pbo · 07-27-2009, 11:53 AM

Focusing screen. There's a small latch that releases the screen holder (look in the mirror box above the mirror) - and you can take it out and somehow clean it. If you're lucky, the mark will be gone. If not, you will have both the black mark AND some dust bunnies, maybe even scratches. That's how my screen looks like....

pbo · 07-27-2009, 11:55 AM

Oh, wait, does it show up in the viewfinder or in the picture? If it's in the resulting picture, then ignore my post.

krypticide · 07-27-2009, 01:02 PM

Well, there are many objects in that camera made in Japan...

Post a sample shot so we can get a better idea.

Marc Sabatella · 07-27-2009, 01:53 PM

Sure, go ahead and post a sample shot, but really, its 99.99% certain we are talking about sensor dust. Google the phrase to read about it, try the dust removal feature of the camera (toward the bottom of the setup menu), and if that fails, put the camera in sensor cleaning mode (also toward bottom of setup menu) and try to clean the sensor with an air blower. Again, google these terms so you know what we are talking about - there are probably thousands of sites and forum threads where this is discussed, so you should have no trouble finding information.

The other possibility, BTW, is a dead pixel. Again, Google is your friend, and after reading existing discussions and seeing pictures, it should be simple enough for you to figure which is going on in your particular case.

Mike Cash · 07-27-2009, 02:01 PM

Originally posted by krypticide

Well, there are many objects in that camera made in Japan...

That would make them domestic objects from where I sit.

pop4 · 07-27-2009, 09:13 PM

If the black mark shows up in the same spot in every PHOTO that you take, then it's most likely something dirty on the sensor.

It you can see the black mark when you look thought the viewfinder, but it's not in the photos, then it's probably something on or behind the focussing screen.

GerryL · 07-28-2009, 08:04 AM

Dead pixels?
Probably not but if it is on the sensor and always on the picture, then rule out the viewfinder or mirror.
Could also be "inside" the lens which you don't regularly notice.

Photogoof · 07-29-2009, 02:15 AM

It's got to be dust. It's a semicircular black mark in the photo (but I don't see it when I'm looking through the viewfinder). I used the cleaning mode recently, which had no effect. I'm really tired of blending out the marks in the photos I take - I'll remove the lens tonight and see if I can get the freaking thing out. I'll post later to let you know what happens.

Thanks, all!

GerryL · 07-29-2009, 07:37 AM

If you can't see it on the viewfinder then it must be on the sensor.
It might be too light to notice but must affect the exposure to light somehow.
Good luck on your endeavor.
I hope it turns out well as when it appears on the photo it is really more than annoying!

Photogoof · 07-30-2009, 02:11 PM

Yes, GerryL, you're so right! It's horribly annoying.

Well, I don't know if this is the recommended procedure, but I removed the lens, set the camera on B, hit the shutter button, then wiped off the sensor while the mirror was up. I then reattached the lens and (after reverting to my previous setting) took a test shot. I put the card in my computer and viewed the test image.

No black mark! None!

I only hope this has taken care of the problem. Seems like it has.

SOldBear · 07-30-2009, 02:19 PM

Originally posted by Photogoof

I removed the lens, set the camera on B, hit the shutter button,

Put a fully charged battery in the camera.

Go to "Set-up" menu, hit the up arrow to go to the last item (Reset), up arrow again to the one above the last item (Sensor Cleaning), right arrow to dive into the sub-menu, up arrow to "Mirror up," OK to raise the mirror.

The mirror remains in up position until you turn the camera off (or battery runs out).

This is safer than using B. You don't want you finger slipping off the shutter release button while you're doing this.

Quote:

then wiped off the sensor while the mirror was up.

What (fluid, applicator) did you use to wipe off the sensor?

Quote:

I only hope this has taken care of the problem. Seems like it has.

I hope so too.

07-27-2009, 11:43 AM	#1
Photogoof Pentaxian Join Date: Jan 2008 Location: Prague Photos: Gallery Posts: 6,422	Foreign object somewhere in camera This is driving me nuts. Every time I shoot with my K10D, a black mark shows up in the upper right-hand corner of the frame. I've cleaned the lens, I've taken the filter off the lens and cleaned both sides of it, I've cleaned the other end of the lens, I've even wiped off the internal mirror. It's still there. Has anyone else had this problem?

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07-27-2009, 11:47 AM	#2
cbaytan Inactive Account Join Date: Nov 2008 Location: Trabzon/Turkey Photos: Gallery Posts: 1,010	Originally posted by Photogoof Every time I shoot with my K10D, a black mark shows up in the upper right-hand corner of the frame. I've cleaned the lens, I've taken the filter off the lens and cleaned both sides of it, I've cleaned the other end of the lens, I've even wiped off the internal mirror. It's still there. Has anyone else had this problem? Ever tried blowing sensor with air with a decent blower yet? Best wishes. Can

07-27-2009, 11:47 AM	#3
wildlifephotog Inactive Account Join Date: Nov 2008 Location: USA Posts: 924	Sample photo? Sounds like possible dust on sensor.

07-27-2009, 11:51 AM	#4
mtroute Veteran Member Join Date: Jun 2009 Location: Portland OR Posts: 533	Originally posted by Photogoof This is driving me nuts. Every time I shoot with my K10D, a black mark shows up in the upper right-hand corner of the frame. I've cleaned the lens, I've taken the filter off the lens and cleaned both sides of it, I've cleaned the other end of the lens, I've even wiped off the internal mirror. It's still there. Has anyone else had this problem? The hand of God? Oh wait, does the line always show up through someones body? If so you may want to watch the movie "The Omen" and see what caused that problem, maybe yours is similar. Seriously though a sample would be helpful.

07-27-2009, 11:53 AM	#5
pbo Veteran Member Join Date: Mar 2009 Location: Ann Arbor, MI Posts: 891	Focusing screen. There's a small latch that releases the screen holder (look in the mirror box above the mirror) - and you can take it out and somehow clean it. If you're lucky, the mark will be gone. If not, you will have both the black mark AND some dust bunnies, maybe even scratches. That's how my screen looks like....

07-27-2009, 11:55 AM	#6
pbo Veteran Member Join Date: Mar 2009 Location: Ann Arbor, MI Posts: 891	Oh, wait, does it show up in the viewfinder or in the picture? If it's in the resulting picture, then ignore my post.

07-27-2009, 01:02 PM	#7
krypticide Veteran Member Join Date: Dec 2007 Photos: Gallery Posts: 1,079	Well, there are many objects in that camera made in Japan... Post a sample shot so we can get a better idea.

07-27-2009, 01:53 PM	#8
Marc Sabatella Veteran Member Join Date: Sep 2006 Location: Denver, CO Photos: Gallery Posts: 10,685	Sure, go ahead and post a sample shot, but really, its 99.99% certain we are talking about sensor dust. Google the phrase to read about it, try the dust removal feature of the camera (toward the bottom of the setup menu), and if that fails, put the camera in sensor cleaning mode (also toward bottom of setup menu) and try to clean the sensor with an air blower. Again, google these terms so you know what we are talking about - there are probably thousands of sites and forum threads where this is discussed, so you should have no trouble finding information. The other possibility, BTW, is a dead pixel. Again, Google is your friend, and after reading existing discussions and seeing pictures, it should be simple enough for you to figure which is going on in your particular case.

07-27-2009, 02:01 PM	#9
Mike Cash Veteran Member Join Date: Jan 2007 Location: Japan Photos: Gallery Posts: 6,950	Originally posted by krypticide Well, there are many objects in that camera made in Japan... That would make them domestic objects from where I sit.

07-27-2009, 09:13 PM	#10
pop4 Veteran Member Join Date: Aug 2007 Location: YMML Photos: Gallery Posts: 1,879	If the black mark shows up in the same spot in every PHOTO that you take, then it's most likely something dirty on the sensor. It you can see the black mark when you look thought the viewfinder, but it's not in the photos, then it's probably something on or behind the focussing screen.

07-28-2009, 08:04 AM	#11
GerryL Veteran Member Join Date: Jan 2009 Location: CA Posts: 2,731	Dead pixels? Probably not but if it is on the sensor and always on the picture, then rule out the viewfinder or mirror. Could also be "inside" the lens which you don't regularly notice.

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07-29-2009, 02:15 AM	#12
Photogoof Pentaxian Join Date: Jan 2008 Location: Prague Photos: Gallery Posts: 6,422 Original Poster	It's got to be dust. It's a semicircular black mark in the photo (but I don't see it when I'm looking through the viewfinder). I used the cleaning mode recently, which had no effect. I'm really tired of blending out the marks in the photos I take - I'll remove the lens tonight and see if I can get the freaking thing out. I'll post later to let you know what happens. Thanks, all!

07-29-2009, 07:37 AM	#13
GerryL Veteran Member Join Date: Jan 2009 Location: CA Posts: 2,731	If you can't see it on the viewfinder then it must be on the sensor. It might be too light to notice but must affect the exposure to light somehow. Good luck on your endeavor. I hope it turns out well as when it appears on the photo it is really more than annoying!

07-30-2009, 02:11 PM	#14
Photogoof Pentaxian Join Date: Jan 2008 Location: Prague Photos: Gallery Posts: 6,422 Original Poster	Yes, GerryL, you're so right! It's horribly annoying. Well, I don't know if this is the recommended procedure, but I removed the lens, set the camera on B, hit the shutter button, then wiped off the sensor while the mirror was up. I then reattached the lens and (after reverting to my previous setting) took a test shot. I put the card in my computer and viewed the test image. No black mark! None! I only hope this has taken care of the problem. Seems like it has.

07-30-2009, 02:19 PM	#15
SOldBear Veteran Member Join Date: Feb 2009 Location: Alameda, CA Posts: 3,206	Originally posted by Photogoof I removed the lens, set the camera on B, hit the shutter button, Put a fully charged battery in the camera. Go to "Set-up" menu, hit the up arrow to go to the last item (Reset), up arrow again to the one above the last item (Sensor Cleaning), right arrow to dive into the sub-menu, up arrow to "Mirror up," OK to raise the mirror. The mirror remains in up position until you turn the camera off (or battery runs out). This is safer than using B. You don't want you finger slipping off the shutter release button while you're doing this. Quote: then wiped off the sensor while the mirror was up. What (fluid, applicator) did you use to wipe off the sensor? Quote: I only hope this has taken care of the problem. Seems like it has. I hope so too.