Outdoor Camera Caution
When install outdoor camera, we should adopt outdoor shell for camera. Outdoor camera usually adopts auto zoom lens in order to adjust light ray of image sensor, enhance WDR function, even prevent intensive light destroying image sensor.
Other outdoor cameras cautions:
Night environment, in order to avoid reflection and shadow, usually needs lighting devices, replacing common bulb by IR lamp. But users must adopt black & white camera or color camera with IR sensor.
Try to avoid direct sunlight in image. Direct sunlight leads to camera fails to capture image, even make color filter of sensor permanently colorless, lead to showing stripe on image. If available, camera installation should keep same direction with sun lighting; moreover, try to avoid shooting towards to sky.
In computer, gain level of image sensor can be adjusted. The higher the gain level, the better the performance is in weak light, but the more serious the interference is. In weak light environment, user can get better performance by enhance gain level; in sufficient light environment, user can get good image by decreasing gain level.
Commonly, shutter speed should be set as 1/50s or 1/60s; weak light with long time exposure, getting good performance. To capture quickly moved objects, shutter speed should be set as 1/10000s.
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