Expozíciókompenzace

Expozíciókompenzace, sometimes referred to as exposure compensation, is a feature found on digital cameras that allows photographers to manually adjust the exposure level determined by the camera's automatic metering system. When a camera's automatic exposure mode is used, it analyzes the scene and chooses settings for aperture, shutter speed, and ISO to achieve what it deems a correct exposure. However, this system can sometimes be fooled by particularly bright or dark areas within a scene.

Exposure compensation enables the photographer to override the camera's decision. If the scene is brighter than usual, for example, a snow-covered landscape or a subject against a very bright background, the camera might underexpose the image, making it appear too dark. In such cases, the photographer can dial in positive exposure compensation (e.g., +1 or +2 EV) to tell the camera to make the image brighter. Conversely, if the scene is very dark, such as a subject in shadow against a lighter background, the camera might overexpose. Positive compensation would then be used to make the image brighter.

The effect of exposure compensation is cumulative. For instance, if a photographer sets compensation to +1 EV, the resulting image will be one stop brighter than what the camera's meter indicated. Setting it to -1 EV will make it one stop darker. This feature is invaluable for achieving creative control over the final image, ensuring that subjects are properly exposed even in challenging lighting conditions where automatic metering might struggle. It is typically adjusted using a dedicated button or dial on the camera body, often labeled with a plus and minus sign.