If your camera fogs up after a period of use, you need to investigate the cause. First, consider possible causes. Common causes include lens or sensor contamination, condensation caused by high humidity or temperature fluctuations, lens coating issues, light scattering (such as in foggy weather), and improper camera settings (such as incorrect white balance).

How can we troubleshoot the cause?

You may need to check the cleanliness of the lens and sensor, observe changes in humidity and temperature, test images at different times of day or in different weather conditions, and adjust parameters such as white balance to see if any improvement occurs.

Below is a summary of several causes and solutions for fogging.

可能存在的原因/Possible causes

1. 镜头/传感器污损：镜头或图像传感器表面附着灰尘、水渍，阻碍光线正常透射，导致画面模糊呈雾状。

1. Lens/sensor contamination: Dust or water stains on the lens or image sensor block light transmission, resulting in a hazy, fog-like appearance.

2. 环境温湿度变化：室内外温差大或湿度过高时，镜头表面易凝结水汽，形成雾状水膜干扰成像。
   2. Environmental humidity/temperature changes: High humidity or significant temperature differences (e.g., indoor-outdoor) cause condensation on the lens, creating a foggy film that blurs the image.

3. 光线散射干扰：雾霾、沙尘等天气中，空气中颗粒物散射光线，导致画面整体朦胧如雾。
   3. Light scattering interference: Particles in smog, dust, or other weather scatter light, making the image appear blurred and foggy.

如何排查原因/How to troubleshoot the cause

1. 检查清洁度：用软布轻擦镜头和传感器，若雾状消失则为污损导致。

1. Check cleanliness: Wipe the lens and sensor with a soft cloth; if the fog fades, contamination was the cause.

2. 观察环境条件：记录雾状出现时的温湿度（如清晨/雨天），判断是否与结露或雾霾相关。
   2. Observe environment: Note humidity/temperature when fog occurs (e.g., early morning/rainy days) to link it to condensation or smog.

3. 测试参数设置：调整白平衡、对比度等参数，若雾状减轻则与设置异常有关。
   3. Test settings: Adjust white balance, contrast, etc.; if the fog weakens, incorrect parameters may be the issue.

如何解决/How to solve it

1. 定期清洁：用专用镜头纸或清洁剂擦拭镜头和传感器，保持表面无污渍。

1. Regular cleaning: Use lens paper or cleaner to wipe the lens and sensor, ensuring they stay free of stains.

2. 改善环境：加装通风扇或除湿机，减少温差和湿度，防止镜头结露。
   2. Improve environment: Install fans or dehumidifiers to reduce temperature gaps and humidity, preventing condensation.

3. 调整功能/参数：校准白平衡、开启防雾模式（若有），或加装滤光片减少光线散射。
   3. Adjust functions/settings: Calibrate white balance, enable anti-fog mode (if available), or add filters to reduce light scattering.