Quote:
Originally Posted by TheGoldy
This may be a dumb question, but doesn't that then leave you with x number of pixels in your finished image that have no information at all? From your description, it sounds just like what happens with hard drives, where it maps bad sectors so it won't write to them. On a hard drive that's not necessarily a bad thing (except for losing some storage space), but on an image sensor I'd think that having "holes" in the area for capturing your image isn't a good thing.
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On the hard drive you don't usually lose any storage space because there is extra space that is not normally used for storage that can be used for this mapping. And it is non-contiguous, in other words the data can be stored anywhere and doesn't have to be side by side.
Now on the camera, it may be a different thing, but short of a full disclosure by Canon on how they map the sensor pixels and how they actually work and exactly why a pixel might be dead, it may be difficult to know. My observation has always been that a dead pixel or two and a speck of dust or two on the sensor will have no effect on my photos. You will never be aware that one pixel is either missing or less than accurate. But if this is perceived as a real problem that effects our real world photos then we should just keep sending back the cameras for replacement and then Canon will get the word fast enough when they have to eat tens of thousands of cameras. I strongly suspect, however, that this is not a problem and never has been.
Cheers,
rfs