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DPChallenge Forums >> Hardware and Software >> Strangest Camera Problem Ever!!!!
Showing posts 1 - 9 of 9, (reverse)
03/14/2010 10:11:14 PM · #1
Alright, I'm lending out my old Canon 300D Rebel (my first camera) to my dad for his trip to a palm springs tennis tournament. He's having a lot of fun but the strangest thing this morning. He's been shooting pictures with the camera successfully for a week now, but today when he got to the courts, he took off the lens cap, hit the shutter button, and got this:

Half of the image is obscured by an unknown, black band. 1/3 of the image is shown at the top but the rest of the image is jet black with a slight tint of light near the bottom. It would appear that something is obstructing light inside of the lens, but he hasn't changed the lens through the entire trip and there is nothing inside the camera, on the sensor or under the lens.


He's tried sensor cleaning, recharging the battery, turning on and off, different image sizes and shooting modes. It makes no sens! If anyone has ever had a problem similar to this, your help is much needed.

Thanks in advance!
03/14/2010 10:27:26 PM · #2
My guess would be that it's the mirror not functioning properly and blocking the sensor. Just a guess though.
03/14/2010 10:44:17 PM · #3
I'm not sure what it is, but it looks expensive. Have him set it on Manual and 2 sec exposure, take off the lens, and trigger the shutter while watching through the front. He will be able to see if the mirror or shutter is not working right.
Maybe the mirror has come loose from it's mount. I wonder if it looks right when looking through the viewfinder?
Also, check the mirror lock up if it has that feature.
03/14/2010 11:28:02 PM · #4
My guess is that he is either using flash past the shutter synch speed of 1/250(i think on that camera, maybe slower) or you are having a shutter failure and it needs to be replaced, for your sake hopefully the first.
03/14/2010 11:30:27 PM · #5
Make sure he is not shooting with a high shutter speed and flash combo. Just trying to think, what can produce images like that. MMM other than that, take off the lens and inspect the mirror. Also the focusing screen. Oh and just to cover the bases, take out the memory card.
Man, that is an interestingly bad problem. I hope things work out...
03/14/2010 11:40:34 PM · #6
lol i dont think its his flash, the shutter speed is 1/100 if you look at the picture. Its either shutter/mirror like has already been said

Message edited by author 2010-03-14 23:41:35.
03/14/2010 11:43:29 PM · #7
I would think it's either a mirror box problem, should be able to trip the shutter and see if the mirror flips all the way up or not when the shutter is released. Use manual control and 1 second shutter speed. You can see if the mirror flips all the way up. Or it could be a failing shutter, should also be able to see the shutter movement on the settings I showed you.

03/15/2010 01:35:53 AM · #8
I think i figured it out...

He's shooting on program and since it's so bright in Palm Springs, the camera is shooting the photo at a shutter speed faster then which it can open and close the shutter. I've herd of this before and he'll have to switch off program. Time to teach dad to use SLR manually over the phone...
03/15/2010 02:03:55 AM · #9
The posted image shows 1/100 sec @ f7.1 That's a fairly low shutter speed.
Since the dark area is at the bottom of the image, I am thinking that the mirror is not getting up and out of the way before the shutter opens. The image on the sensor is upside down in the camera, so that would make the photos dark at the bottom if the mirror is only partly up. Maybe the piece of felt that cushions the mirror at the top of it's motion has come loose and is stopping it from opening completely. It would be visible by taking off the lens and looking carefully in good light.

Message edited by author 2010-03-15 02:07:56.
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