Monday, 25 July 2011

What Does Your Camera Know About Exposure?

In The Museum III

This is typical of the sort of scene that a camera on auto will get wrong. And if it is a digital camera you can bet that the bright parts will go to detail-less white.

Look at this scene. It is mostly dark. It is a dark room. It is supposed to be. But how must the camera know? It can't.

The simplest way to deal with this situation is with a control that all cameras will have which is called "Exposure Compensation". It is usually marked with a "+/-" marking. If you find that you are getting a too-bright picture in a scene like this and losing the bright parts simply hit "-" a few times and take the picture again. Don't forget to set it back to "0" when you are done!

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