I find myself in a bit of a dilemma, and while I don't like for my first post to ever be about a technical issue - I have a question for everyone. As a little background so you better understand the issue. I own the 5D Mark iii, and I purchased it new 1 year and 6 months ago. I own two lenses a 24-105 f4/L and the 50mm f/1.8. I'm still working up my gear list and I do my photography on the side of my full time job, so I don't get to spend everyday shooting like most of you are probably used to. I do not shoot weddings or portraits, at most I shoot Landscape, Travel and Nature. I am not new to photography and video as well; however, this is an endeavor to start my own business.
After starting this business, I hit a huge bump in the road. Recently, I came across a problem with the sensor displaying many dead pixels - and by many, I mean upwards of 50 prominent dead pixels and noise. When I discovered this, I happened to be shooting at a 15 second duration at 640 ISO with Long Exposure Noise Reduction Off. I noticed the pixels on the back of the LCD as I was zooming into the image to double check my focus across the picture. It is not dead pixels in the LCD, as these dead pixels moved as I scanned across the image with the joystick.
I called a few agencies around my place here in Atlanta, and everyone said the same thing. Sounds like a sensor issue, we can't help you, and you will need to send the camera to Canon. After I sent in the camera, Canon confirmed the CMOS needs to be replaced. As you can probably assume, this is the most expensive part in the camera. It's not a cheap fix. I'm concerned for many reasons. The body is only 6 months out of warranty, and it is in pristine physical condition (not counting the sensor of course). There are approximately 15k actuations on the shutter. I was told by the Canon rep that shooting video and long exposures create this problem with the sensor. However, I do not shoot video with this body, as that's what I do in my full time job, so I tend to do the opposite with my own gear. While I have shot some long exposures, I have never gone past the 30 second mark since I have owned the body; and long exposures are not something I'm doing on every shoot.
I'm really disappointed with the diagnosis, and definitely at the cost. I don't think anyone expects a sensor replacement in any camera at a year and a half. The cost is no drop in the bucket. Any help would be great.