Ae lock and ccd

1. Ae lock ae is the abbreviation of automatic exposure automatic exposure control device, ae lock is locked in a set ae, when used in automatic exposure exposure control, to ensure normal subject exposure.
There are several points to note when using the ae lock: 1. The auto exposure (ae) lock cannot be used in manual mode or self-timer. 2. Do not adjust the aperture size after pressing the auto exposure (ae) lock. 3, do not use (ae) lock when shooting with flash.

2. Ccd

Chinese-translated as a charged coupled device, which is a circuit device that senses light, just like a traditional camera's film. You can think of it as a tiny sensory particle that is covered in the back of an optical lens. When the image is transmitted through the lens and projected on the surface of the ccd, the ccd generates an electric current and converts the sensed contents into digital data for storage. The larger the number of ccd pixels and the larger the size of a single pixel, the clearer the collected images will be. Therefore, although the number of ccds is not the sole focus of image quality, we can still regard it as one of the important criteria for camera grade.