Exposure++Modes

=Exposure Modes= Parts of this are reprinted from http://www.digicamhelp.com/camera-features/camera-modes/exposure-modes.php Exposure is the amount of light which falls upon the sensor of a digital camera. Shutter speed and aperture are adjusted to achieve optimal exposure of a scene. Most digital cameras offer a variety of exposure modes from fully-automatic to semi-automatic to full manual mode. Scene modes have factory optimized settings for different subjects and scenes.

Automatic Modes
When using a fully automatic mode, you simply depress the shutter-release button and the camera selects all settings depending on the type of lighting and brightness of a scene. The camera focuses automatically and, when light is low or insufficient, automatically fires the flash. Students often ask why you would not want to always use the auto exposere modes. When creating a photo there are times when you would want to use manual settings to get a better picture. Look at the pictures below.

Digital cameras with Program AE mode set the shutter speed and aperture are automatically however the user can adjust some settings such as ISO and white balance.

Semi-Automatic Modes
You select the aperture (lens opening) and the camera automatically sets the shutter speed. Or select the shutter speed and the camera automatically sets the aperture.

Manual Mode
You have complete control by selecting both the shutter speed and the aperture. Digital cameras with manual modes have a manual assist indicator, or other means, which indicates whether or not the exposure is adequate.

Scene Modes
Scene modes let you choose from a variety of preprogrammed modes suitable to photograph a given subject such as a portrait, landscape or fireworks. The camera settings change when moving a dial to select the mode that matches the scene you plan to photograph.