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Canon Digital Rebel Shutter Problem Canon Cannot Repair. Ideas?

chris moseley , Feb 14, 2004; 12:09 p.m.

Using available light (no flash) with shutter speeds of 1/1600 or higher, parts of my images are blacked out (like the mirror is not moving quickly enough). The black area grows with faster shutter speeds. This occurs in any mode (AV, TV, M) or ISO when shot at 1/1600 or higher. Problem occurs with multiple Canon lenses (85/1.8, 70-200 2.8L). Dealer had no clue. Sent to Canon support, who, after three weeks returned camera saying they had fixed it and if the problem persisted to "send the camera back with a lens." (did they have no lens handy to try on the camera?). Go here for images + exif: link to images Based upon other suggestions, I'll add: no foreign objects exist in the camera - verified by canon usa I'm not using the flash (as said earlier). The Rebel still does not work. Ideas?


Sample Image of Digital Rebel Problem

Responses

chris moseley , Feb 14, 2004; 12:11 p.m.

Image is here...

Here's the actual image (follow the link above for more). Sorry about that!


Attachment: 12.jpg

Robert Robertsen , Feb 14, 2004; 12:43 p.m.

Chris, I'm not an expert on this, but there is a possibility that they found no problem with the shutter and want you to send the lens to see if it may be a problem with it.

Rob

Mark U , Feb 14, 2004; 01:46 p.m.

You don't seem to have posted shots that show the problem clearly at anything other than 100 ISO - and those images are heavily underexposed. Having said that, the fact that the top of the image is dark suggests that the second curtain is sticking with the first curtain until it is part way across the sensor before separating to allow light through. If it were due to the mirror, the bottom of the image would be dark. Of itself, it doesn't look as though it is due to the lens - late stopping down would cause the reverse effect,and you seem to have been using your lens wide open in any case. Your choice of subject for test shots doesn't greatly help with diagnosis. Try taking e.g. the fence on a sunny day - but not through the window. Because of this, it's a little hard to tell, but I think you also have some focus problems, and that is why they suggested also sending in a lens. I'd ask them to consider replacing the shutter entirely.

chris moseley , Feb 14, 2004; 07:31 p.m.

More Shots

OK - hope this helps Untitled Document Look at this thread

Mark U , Feb 14, 2004; 08:03 p.m.

My answer remains the same. You should understand that the mirror flips up (blocking the focussing screen and blacking out the viewfinder), and that the image as recorded on the sensor is upside down and reversed left to right, because all the light rays cross over when focussed by the lens. Since the blackout occurs on the top of the picture in landscape orientation this corrresponds to the bottom of the sensor being obscured. The shutter curtain consists of two curtains that travel upwards one after the other leaving a gap between them that exposes the sensor. The best repair is a new shutter.

Jim Strutz - Anchorage, AK , Feb 16, 2004; 12:07 a.m.

Send it back with a couple of pictures and a lens. Just because they didn't fix it the first time, doesn't mean they won't get it right if you try again. The tech probably didn't understand the problem & didn't know how to duplicate the trouble.

Mark Bratlie , Feb 22, 2005; 03:24 p.m.

I signed up for this forum just to give you my input. I am sorry to report bad news, but a friend of mine has a 10D, and he had a shutter malfunction and took the camera to Canon for repair (under warranty). They originally said they could not repair it because he stuck his finger inside the camera (implying that he damaged the shutter). After he insisted he did no such thing, they told him it could only be repaired for $600. (remember, still under warranty). He sent a letter from his favorite attorney and Canon did the right thing - fixing it, and offered a Canon lens for his trouble. When he went to his local camera retailer to pickup the lens, as Canon arranged, the dealer made a comment like, "well if they are offering a free lens it must only be because you ran into that shutter problem they can not solve". A KNOWN ISSUE! He is so upset, he told me to buy the Nikon N70. The only reason he relayed the story is because I told him how interested I am in the new Rebel XT.

This is all I know. I suggest you investigate this further and possibly then talk to your favorite attorney for a little letter to Canon.

Bob Atkins , Feb 22, 2005; 03:34 p.m.

These all sound like very odd stories in which we are not hearing all the relevant facts.

Canon will replace a shutter for between $200-$300 on any current camera, so to say there is a non-fixable shutter problem makes no sense, nor does a $600 repair bill.

Send it back, with a lens, and I'm sure Canon will fix or replace it if it's under warranty.

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