K200D: What is missing from the shutter box?

kevinh · 05-15-2013, 09:49 PM

I got this camera real cheap. It overexposes but I can use it in manual and shorten the exposure time to compensate. The original owner said a "film" at the back of the shutter box was damaged and removed. This is the first DSLR I've had my hands on so have nothing to compare it to. Anyone know what is missing and if it is cost effective to repair? Thanks.

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Eulogy · 05-15-2013, 10:33 PM

Perhaps the coating on the sensor? That might result in strange issues, but I wouldn't think overexposure as one of them.

kevinh · 05-15-2013, 10:43 PM

Can you tell it is missing in the posted photo?

Eulogy · 05-15-2013, 10:45 PM

Not really. That's the only "Film" like stuff in there that I can think of, though.

Adam · 05-15-2013, 10:50 PM

Could be the adhesive used for dust removal. I don't see why that would need to be taken out, though.

kevinh · 05-15-2013, 10:51 PM

The only picture I have found of the sensor is a video here:
K200D shutter video | Flickr - Photo Sharing!
It shows it as a more uniform color, not the blotchy appearance seen on my camera sensor. Kind of a neat slow motion video.

kevinh · 05-15-2013, 10:56 PM

Eulogy seems to think it could have been a film covering the sensor and by the previous owners description, I tend to agree. I wonder if it is worth replacing the sensor?

Kunzite · 05-16-2013, 12:10 AM

The mirror?

Is there something loose, in the bottom-left corner?
The sensor is covered by a piece of glass (optical filter), not by some film.

topace · 05-16-2013, 01:31 AM

Possible theory: The IR filter was removed, and it overexposes because your pictures now include IR light.

kevinh · 05-16-2013, 01:46 AM

Originally posted by topace

Possible theory: The IR filter was removed, and it overexposes because your pictures now include IR light.

Thank you and everyone before you that answered. With the help of the slow motion video link I posted in message #6 and firing the camera at a 10 second exposure time while looking inside, I was able to determine that the "film" that was removed that the previous owner spoke of was the bottom half of the shutter. The top shutter stuck half the time and when it did it looked in good condition, but then I noticed the bottom shutter was gone. The photo I posted shows the remnant of the shutter piece in the bottom left corner. Too bad: The camera has less than 3000 exposures. Hopefully I can sell it for parts.

tim60 · 05-16-2013, 03:27 AM

Does it overexpose consistently, and by an amount you can compensate for with the +/-EV control on the meter?

If so, do some calibration and you have a $0 'repair'.

pxpaulx · 05-16-2013, 05:19 AM

I was going to say with that little piece of black sticking up in the bottom left corner that they might have torn out part of the shutter. My guess would be the shutter got touched which made it stick. Rather than have it repaired they pulled it out (the shutter leafs are quite delicate - I was able to salvage the shutter in an older samsung gx10 with some tweezer work - one of them was partially torn and overlapped the next leaf - but I could see completely wrecking it quite easily).

**Lowell Goudge** · 05-16-2013, 01:14 PM

When my K10 shutter failed in 2009? It cost $325 CDN to replace, it would be a really tough call to replace the shutter on a K200 now(likely same as K10) given age etc.

pxpaulx · 05-16-2013, 01:19 PM

Originally posted by Lowell Goudge

When my K10 shutter failed in 2009? It cost $325 CDN to replace, it would be a really tough call to replace the shutter on a K200 now(likely same as K10) given age etc.

Agreed with Lowell - if it can be compensated for and used in some scenarios using M mode that will probably have to do...hopefully the initial investment was under 3 digits.

kevinh · 05-16-2013, 01:41 PM

Bought it for $60, sold it for $55. This time it was accurately described. The camera was clean and the LCD screen was scratch free. The buyer will probably be very happy if he/she bought it for the LCD or any other of the non-damaged components.

05-15-2013, 10:43 PM	#3
kevinh Inactive Account Join Date: Feb 2013 Posts: 61 Original Poster	Can you tell it is missing? Can you tell it is missing in the posted photo?

05-15-2013, 10:50 PM	#5
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,597	Could be the adhesive used for dust removal. I don't see why that would need to be taken out, though. Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

05-16-2013, 01:31 AM	#9
topace Senior Member Join Date: Sep 2011 Location: Stockholm Posts: 198	Possible theory: The IR filter was removed, and it overexposes because your pictures now include IR light. Last edited by topace; 05-16-2013 at 01:32 AM. Reason: Grammar

05-16-2013, 01:41 PM	#15
kevinh Inactive Account Join Date: Feb 2013 Posts: 61 Original Poster	Sold it Bought it for $60, sold it for $55. This time it was accurately described. The camera was clean and the LCD screen was scratch free. The buyer will probably be very happy if he/she bought it for the LCD or any other of the non-damaged components.

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05-15-2013, 10:33 PM	#2
Eulogy Veteran Member Join Date: Feb 2012 Location: Fredericton, New Brunswick Photos: Gallery Posts: 632	Perhaps the coating on the sensor? That might result in strange issues, but I wouldn't think overexposure as one of them.

05-15-2013, 10:45 PM	#4
Eulogy Veteran Member Join Date: Feb 2012 Location: Fredericton, New Brunswick Photos: Gallery Posts: 632	Not really. That's the only "Film" like stuff in there that I can think of, though.

05-15-2013, 10:51 PM	#6
kevinh Inactive Account Join Date: Feb 2013 Posts: 61 Original Poster	The only picture I have found of the sensor is a video here: K200D shutter video \| Flickr - Photo Sharing! It shows it as a more uniform color, not the blotchy appearance seen on my camera sensor. Kind of a neat slow motion video.

05-15-2013, 10:56 PM	#7
kevinh Inactive Account Join Date: Feb 2013 Posts: 61 Original Poster	Eulogy seems to think it could have been a film covering the sensor and by the previous owners description, I tend to agree. I wonder if it is worth replacing the sensor?

05-16-2013, 12:10 AM	#8
Kunzite Pentaxian Join Date: Apr 2007 Location: Romania Posts: 15,132	The mirror? Is there something loose, in the bottom-left corner? The sensor is covered by a piece of glass (optical filter), not by some film.

05-16-2013, 01:46 AM	#10
kevinh Inactive Account Join Date: Feb 2013 Posts: 61 Original Poster	Originally posted by topace Possible theory: The IR filter was removed, and it overexposes because your pictures now include IR light. Thank you and everyone before you that answered. With the help of the slow motion video link I posted in message #6 and firing the camera at a 10 second exposure time while looking inside, I was able to determine that the "film" that was removed that the previous owner spoke of was the bottom half of the shutter. The top shutter stuck half the time and when it did it looked in good condition, but then I noticed the bottom shutter was gone. The photo I posted shows the remnant of the shutter piece in the bottom left corner. Too bad: The camera has less than 3000 exposures. Hopefully I can sell it for parts.

05-16-2013, 03:27 AM	#11
tim60 Pentaxian Join Date: Apr 2011 Photos: Albums Posts: 8,755	Does it overexpose consistently, and by an amount you can compensate for with the +/-EV control on the meter? If so, do some calibration and you have a $0 'repair'.

05-16-2013, 05:19 AM	#12
pxpaulx Veteran Member Join Date: May 2009 Location: Twin Cities, MN Posts: 2,867	I was going to say with that little piece of black sticking up in the bottom left corner that they might have torn out part of the shutter. My guess would be the shutter got touched which made it stick. Rather than have it repaired they pulled it out (the shutter leafs are quite delicate - I was able to salvage the shutter in an older samsung gx10 with some tweezer work - one of them was partially torn and overlapped the next leaf - but I could see completely wrecking it quite easily).

05-16-2013, 01:14 PM	#13
Lowell Goudge Site Supporter Join Date: Jan 2007 Location: Toronto Photos: Gallery \| Albums Posts: 17,891	When my K10 shutter failed in 2009? It cost $325 CDN to replace, it would be a really tough call to replace the shutter on a K200 now(likely same as K10) given age etc.

05-16-2013, 01:19 PM	#14
pxpaulx Veteran Member Join Date: May 2009 Location: Twin Cities, MN Posts: 2,867	Originally posted by Lowell Goudge When my K10 shutter failed in 2009? It cost $325 CDN to replace, it would be a really tough call to replace the shutter on a K200 now(likely same as K10) given age etc. Agreed with Lowell - if it can be compensated for and used in some scenarios using M mode that will probably have to do...hopefully the initial investment was under 3 digits.