What if the camera image is not clear?

Problem phenomenon 1: the daytime is normal, and the dusk and night are blurred as a whole.

Cause of the problem: In the above two pictures, the focal length and focus position of the camera have not changed, but the aperture is small and the depth of field is large during the day, while the aperture is large and the depth of field is small at night. The position that is clearly focused during the day may fall out of the depth of field at night, and this phenomenon appears. Because it is caused by the change of aperture, this problem usually appears in cameras with automatic aperture.

Solution: Set the camera to manual (electronic) aperture, then adjust the lens to focus clearly, and then restore the camera to "automatic aperture" mode.

Problem phenomenon 2: the image is half clear and half fuzzy, commonly known as "half paste"

Cause of the problem: The sensor is not completely horizontal when it is installed in the factory, resulting in a distance difference between the front and rear. A distance difference of only a few millimeters may be displayed as "half-stick".

Solution: to solve it completely, it can only be repaired.

For bolt with external lens, the blurred part can be divided into two sides by reproducing the focus and improving it appropriately, or the blurred part can be adjusted to a relatively inconspicuous angle, such as a monochromatic plane.

Phenomenon 3: The bolt is connected to the lens, and the focus knob of the lens can't focus clearly all the time.

Cause of the problem: The external lens of bolt machine, the interface of the camera is CS, and the lens normally connected with the CS interface is enough. If the lens interface of the bolt machine is C, a C/CS adapter ring needs to be added.

Solution: Confirm the interface type of camera and lens, and use the adapter ring correctly.

Problem phenomenon 4: the overall image is blurred and the definition is insufficient.

Cause of the problem: the image is either obviously blurred, not out of focus, or the whole image is somewhat hazy. In this case, it is necessary to consider whether the resolution is insufficient.

1) Standard definition lens with high-definition network camera.

2) A camera with a small target surface uses a lens with a large target surface. The bigger the target surface of the lens, the better. Under the condition that it is not smaller than the target surface of the camera sensor, try to be close to the target surface of the camera sensor.

Solution: The high-definition camera is equipped with a high-definition lens, and the target size of the lens is not less than the target size of the camera sensor, preferably close to it.

Problem phenomenon 5: the ball machine is normal at a long distance, and the focus of the close object is unclear.

Cause of the problem: the ball machine is generally used for remote monitoring, so the ball machine has the latest focus limit by default, and does not focus within the limit.

Solution: Adjust the distance of the minimum focus limit of the ball machine according to the specific scene.

Network ball machine, you can log in the ball machine on the web page, configure it in an advanced way, and set the minimum focus limit in the picture.

Simulate the ball machine, enter the ball machine menu, system settings, mobile settings, and adjust the minimum focus limit.

Problem phenomenon 6: The image is partially or completely blurred in rainy days.

Cause of the problem: rainy days or humid air, rain wet the outside of the glass cover or condensed water droplets inside the glass cover, and the images seen through the lens are all blurred.

Solution: First, distinguish whether it is wet outside or foggy inside. If the outside is wet by the rain, it is normal, and it will be normal after a sunny day, or use equipment with wiper function. If there is internal fog, which is related to the installation and construction, you can check the protective cover and return the ball barrel machine for after-sales inspection.

Problem Phenomenon 7: The dirty camera cover causes the image to be partially blurred.

Cause of the problem: The camera will produce dirt when using the cover for a long time, which exceeds the depth of field. What you see is local blur, or there is a spider web on the cover of the camera. When infrared rays come back at night, you will see many stripes or a piece of white.

Solution: Clean the camera cover regularly as required.