Appendix A. Glossary

AF-Assist Illuminator light This light on your camera will pulse to cast illumination on your subject in low light. This small light makes it easier to see and focus on your subject. This option is not always enabled in your camera, so check your manual for more information.

Ambient light Ambient light is produced by light sources that already exist in a scene, as opposed to those introduced by the photographer. Ambient light can be natural (sun, window light) or man-made (street lamps, neon signs).

Aperture Priority (Av) mode In Aperture Priority mode, you set the aperture that you want to shoot at, then the camera adjusts the shutter speed to achieve appropriate exposure.

Bokeh This term refers to the way a lens renders ...

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