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Auto exposure mode settings

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exposure is the product of the illumination of the photosensitive matrix of the video camera by the time of illumination. It is expressed in lx*s (lux per second).

As a rule, the exposure should be such that the sensor with the given sensitivity will receive the amount of light needed to save the image. In photography, this is a technical characteristic of each photosensitive matrix (photographic film). The higher the light sensitivity (ISO 50/100/200/400/800/1600/3200) of the sensor (film), the lower the exposure required.

Given that manual settings in modern camcorders can be very difficult for beginners, there are auto exposure modes.

Choosing one or another AE program means that you are changing the programmed aperture aperture and shutter speed (shutter speed) presets.

In this context, it should be noted that the amount of light entering the matrix and the depth of field (i.e., the distance at which different objects of photography fall into the field of sharpness) depend on the size of the open aperture of the aperture.

As a rule, shutter speed affects both the amount of light entering and the clarity of the image of moving objects, and the higher the speed of objects, the faster the shutter should operate, and the weaker the illumination, the longer the shutter speed required. The more programs, the more options you have to adapt the camera to different lighting conditions.

However, many high-end camcorder models are limited to three basic presets in their set, providing the ability to adjust almost all parameters manually. The three modes are "Full Auto" and two extreme shutter states: "High Speed" and "Slow" (sometimes referred to as "Low Light", sometimes "Twilight").

Publication: video-minidv.blogspot.com

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