Ask MeCha: If you know anything about how digital cameras work, I have a question for you about the light sensor.→[More:] I recently bought a second-hand digital camera, and am still learning how to work it. (It's a DSLR, and I've only ever used point-and-shoots.) For some reason, if I take pics outside in bright sun, even if the setting is on "AUTO," the picture completely overexposes. It works fine indoors and in lower light.

The camera records video (.AVI format) too, and if I record an AVI outside, it looks just fine. This makes me think that the sensor is okay, and there's just a setting I'm missing somewhere. Am I right about this? Or, (and I guess this is the real question), do cameras have two different sensors for photos and for video?

I tend to think it's the same sensor for both, but I may be wrong, and haven't had any luck searching for the answer online.