Workflow of monitor

According to different applications, the following mainly explains the control and process of monitoring camera in digital film shooting:

1. Use the monitor to control the exposure.

First, adjust the monitor to a relatively standard state, and adjust this state at any time during shooting. The high-definition monitor has a waveform diagram, which is of great practical significance for controlling exposure and distinguishing the details of light and dark parts.

2. Automatic aperture control exposure

At this time, the automatic aperture is used as an exposure meter, and the photographer should have a clear understanding of the dynamic range curve of the monitoring camera.

3. zebra crossing control exposure

A zebra crossing is usually designated with an amplitude of 90%-95% of the signal level. At present, the high-definition surveillance camera is designed with two zebra stripes. The first stage is set to 70%, that is, the amplitude of 700 mV video signal level is 60%-65%. The other is 100% zebra crossing, 70% corresponds to the gray area in the image, and 100% is the bright part.

In 2006, the number of films shot by digital equipment reached 1 10, accounting for 1/3 of the national output. The technical difference between digital film and film film in actual shooting is mainly the control of color tone and exposure, and the shooting process is also different.

The exposure of digital movies. Lens-spectroscope -CCD-A/D analog-to-digital conversion-black spot correction-gain adjustment-white balance-stray light correction-detail adjustment-color giant array-inflection point adjustment-GMA adjustment-black cutting. Film movies are controlled by exposure meters. Some photographers also use digital exposure instruments. Generally speaking, the sensitivity of digital cameras is equivalent. For SONYF3200K, the exposure of digital movies is controlled by. Shutter 1/48 seconds, 24P mode, equivalent to 320 degrees. Exposure meters are rarely used in digital movies because they are set according to the photographic characteristics of film emulsion. Film is sensitive to blue light and ultraviolet light, while digital is relatively sensitive to red light.

Video surveillance camera. This product has the characteristics of clear image, bright color, high number of lines and low illumination. With the continuous investment in technology research and development, the surveillance camera will promote the market innovation process with the growth of its CCD technology and image sensor solution lineup.