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较差环境是指低温、高温、温差大、雨、雪、雾天,风沙、粉尘、有害气体浓度大,强电磁场等环境。在这样的环境下使用摄像机拍摄,应注意以下问题。 1.防寒 目前多数摄像机允许在-5℃～45℃的温度范围内工作,但最佳温度在10℃～30℃。在这一温度范围内,不调整摄像机即能获得较稳定的图像,超过此范围或温度剧烈变化时,将给图像质量带来一定影响。在冬季,天气寒冷,使用摄像机时,通常是给摄像机穿上“棉装”,以使其正常运行。尽管这样,正式拍摄前需提前开机,让机器多预热一会儿(3～5分钟),使机内电子元件处在较佳温度下工作。电池也同样需要防寒,低温会使电池的能量降低,没使用的备用电池放在4℃～25℃处为宜。
Poor environment refers to the low temperature, high temperature, temperature, rain, snow, fog, sand, dust, harmful gas concentrations, strong electromagnetic fields and other environments. In this environment using a video camera, should pay attention to the following questions. 1 cold Most cameras currently allow the work in the -5 ℃ ~ 45 ℃ temperature range, but the best temperature at 10 ℃ ~ 30 ℃. In this temperature range, you can get a more stable image without adjusting the camera, beyond which the image quality will be affected when the temperature changes drastically. In winter, when the weather is cold and the camera is used, it is common practice to put “cotton” on the camera for proper operation. In spite of this, the camera needs to be powered on before the official shooting so that the machine warms up for a while (3 to 5 minutes), allowing the electronic components in the machine to work at better temperatures. Batteries also need cold, low temperature will make the battery lower energy, unused spare battery placed at 4 ℃ ~ 25 ℃ is appropriate.