A sensor is the digital camera's equivalent to film. It contains millions of tiny light-detecting areas called photosites, which convert light into an electric charge. After exposing the sensor to light, this charge is read from each pixel and converted into a digital image.
Possible Duplicate: What will happen to a camera if it is taken to an environment beyond its operating temperature? I have a canon t3i and I am curious to know just how much heat they can ...
When choosing a camera, which of the following options would be the best in taking photo in low light situation and cropping photo situation? A smaller f-number lens with a bigger sensor size A ...