What is the difference between a camera and a camera?

Photoreceptor contrast: camera: high resolution; Camera: low resolution (at least when shooting video, the resolution of 1080p video is only 2 million pixels); Camera: the photoreceptor gain is called ISO；; Camera: the ISO of the photoreceptor is called gain; In fact, for the photoreceptor, the gain is more professional, and ISO is only for film. It's just that everyone is used to using ISO on cameras and converting ISO of films. Some very old DC have no ISO, only gain. Generally, DV can be shot with 4 Lu x illumination when the gain is 0, and personal estimation is about equivalent to ISO 200 (of course, it cannot be converted strictly, and the test conditions are different); Camera: Generally, the photosensitive size is large (except low-end DC). Generally speaking, home DC has a 1/2.3-inch CCD because of its high resolution and large pixels per inch. Camera: The size of the photoreceptor is generally small. Generally, many professional DVs only have 1/3-inch CCD (of course, professional DVs usually have 3*CCD) because the resolution of CCD is small per inch.

At the same time, under the same viewing angle, a smaller CCD size can be matched with a lens with a smaller physical focal length, which is conducive to ensuring a larger depth of field; Processor comparison: camera: the processor processes a single high-resolution picture; Camera: the processor processes continuous low-resolution pictures; Opto-mechanical cooperation: Camera: Opto-mechanical cooperation is based on accuracy, low-end DC focuses slowly, and bellows is also ok, as long as it is accurate; Camera: In the cooperation of optics and machinery, speed is the priority. The sensitivity of human eyes to dynamic video is much lower than that of static images, and the accuracy is almost irrelevant, but it will be unclear for a while, and many uses even require zooming while focusing; Shutter: camera: the shutter speed is variable, so you can shoot at a slower speed; Camera: Most domestic cameras shoot 30 frames per second at the speed of 1/60s, and professional cameras can shoot faster (this shooting speed refers to the shooting speed of video, not the shutter speed when using DC); Lens: camera: the aperture of f2.0 is already very large, and the lens of f 1.4 or f 1.0 is also quite expensive; Camera: Even if it is a cheap entry model, f 1.8 is almost standard, because it is impossible to use a low-speed shutter when shooting. Increasing gain is one way, and the other is just increasing aperture; Audio: camera: most shooting frequencies are only mono; Camera: most of them have stereo channels, even if they don't, they support external MIC；. Monitor: camera: small screen behind the machine, or SLR, or paraxial; Camera: a small screen on the machine, or EVF framing, can be connected with a display and a black-and-white display to meet the needs of on-site brightness monitoring, and may also directly output video/audio to meet the needs of live broadcast; Shape, storage medium.