SLR? Camera?

(1) SLR camera is a professional equipment for photography, and the camera function is its by-product. It's really inconvenient to take pictures with a SLR camera. The digital camera must start the display when it starts the photo function. The display of digital camera consumes a lot of electricity. For a digital camera without an external power supply, if the local battery is used for shooting, the battery will be dead in less than three minutes, so the photographing function of the digital camera is extremely important.

(2) The camera is very professional, and the ratio of ordinary hand-held camera to professional camera is like the ratio of card machine to SLR camera. Taking pictures with a hand-held camera is unprofessional, and the camera function of a SLR is worse than that of a hand-held camera. Generally, the hard disk capacity of a video camera is 40-80G, and a digital camera with 2G memory card can shoot HD video in less than 10 minute. Some cameras can only shoot for one or two hundred seconds. We can regard it as a "camera demonstrator" with the camera shooting function of a SLR camera.

(3) From the design point of view, the SLR camera can easily realize the camera shooting function without increasing a lot of cost. It is a selling point, and most users use this function to "develop its use";

(4) Professional video cameras are expensive and sometimes important to users (such as obtaining evidence, recording emergencies, family karaoke, etc.). ), but they are not very common. Combining cameras with digital cameras, these users can "make do" with digital cameras when they need to take pictures without buying cameras;

(5) Journalists are divided into two categories: literal journalists and image journalists, and image journalists are divided into photography and video recording. For photographers, it is very convenient and timely to record "wonderful moments" with the SLR camera in their hands when encountering emergencies;

(6) I have bought 5D2 for more than a year, and I have never used the camera function of 5D2 once (not even a demonstration);

(7) SLR cameras are not only used for general photography, but also for scientific research and some special equipment, such as hospital X-ray machines, which also take pictures with SLR. The satellite also takes photos of the earth with a SLR camera, which can also be used as a monitor for closed-circuit television. Therefore, adding the camera function to SLR cameras can expand the user base of SLR cameras;

(8) The traffic police department has some road monitoring equipment, which also uses SLR as the "monitoring head" to take photos. It can be used for both photography and video recording.

(9) Some SLR cameras can introduce GPS satellite positioning signals, and also record the latitude and longitude of the shooting place, sea level and other data. These pictures and images with special information can be used as special basis;

(10) For people who like photography, it is more rational to ignore some impractical luxury functions when buying a camera. The above is my personal opinion. Listen to everything and you will understand.