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china latest news about The relationship between the lens focal length and distance

The relationship between the lens focal length and distance

[2018-02-02 10:29:13]
The relationship between the lens focal length and distance a. The use place and view angle of camera lens: Wide-angle lens: 1. from the perspective of more than 90 degrees, generally used in the elevator car, hall and other small sight angle places such as 2.8MM 2.5MM; 2, from the perspective of 5... Read More
china latest news about 3MP 25mm F1.2 CCTV Lens is released

3MP 25mm F1.2 CCTV Lens is released

[2016-05-19 23:57:04]
25mm F1.2 CS mount lens, with 3.0 Megapixel, manual iris control, hot sale model recently. Read More
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