In the case of manual operation, it allows for example to track a person in a store. This is mainly used for indoors and when it is important to visualize the direction in which they point. Most of these cameras do not offer 360 degree panoramic functions and are not designed to operate in automatic mode, or "guard duty". The optical zoom ranges from 18x to 26x.
The network dome cameras have all the advantages of fixed dome cameras: relatively discrete, their observation does not determine which direction they point. Unlike PTZ Cameras, dome cameras are equipped with network features panoramic 360 degrees. They also have all the robustness required for continuous operation in "guard duty", while moving the camera continuously following example, 10 presets, day or night. With the "watchtowers", a single camera can cover an area where 10 fixed cameras would be needed. The main disadvantage is only one place can be monitored at a time, leaving the other 9 positions unattended. The optical zoom is 18x to 30x normal. For outdoor installations, however, zoom above 20x prove unworkable in principle because of the vibrations and movements due to wind.
With the advent of network cameras, a new type of PTZ Camera is gaining the market: PTZ-called "non-mechanical." Equipped with a mega pixel sensor, these cameras are capable of covering angles from 140 to 360 degrees. The operator can also make views, tilt or zoom in all directions without any mechanical movement. Its main advantage is the lack of attrition inherent in moving parts and motor.
The camera also allows the immediate crop in a new position, an operation which, in the case of traditional cameras, sometimes takes 1 second. The best current cameras use sensors with 3 mega pixel. To ensure good picture quality, features pan and tilt should be limited to 140 degrees and zoom to 3x. Broader coverage or higher zoom have an adverse effect on image quality.
The fixed network cameras, with body and lens, are the traditional type of network camera. For some applications, it is important that the camera is clearly visible. In this case, a fixed network camera will be the best choice clearly visible, it indicates just as clearly the direction in which it points. Another advantage is that the fixed network cameras are equipped with interchangeable lens type C / CS. For added protection, the fixed network cameras can be placed in boxes specially designed for installations inside or outside.
Audiovideoking specialize in CCTV, IP Camera, PTZ Camera at 1615 Wilcox Av, Los Angeles, & Orange County CA 90028 (323) 332-6781 & 866-595-6190
No comments:
Post a Comment