Introduce the types of photographic equipment in detail.

Cameras are divided into small format (generally referred to as 135 format), medium format and large format. The camera is divided into two parts, namely, the upper shaft (there is no light plate system, and there are two independent exposure and framing systems. Advantages are small size, disadvantages are that you will be tragic without lens cover), and dual-lens reflection (commonly known as double reflection, two lenses, one for framing and one for exposure), which is large in size and convenient to carry. Viewing and exposure are integrated into a system, which is slightly larger than the paraxial volume, but convenient and practical, easy to maintain and carry, and is the mainstream. There is also a consumer card machine (called a fool machine in the film age), and now the gap between this camera and the entry-level SLR camera is getting smaller and smaller. From the use of photosensitive materials, it can be divided into traditional film (using film, the current film machine is simply a cabbage price, and the technology is much better than the digital age) and digital cameras. There is also a replaceable digital back specially used for large and medium format cameras, which is mainly used for commercial photography (high pixels and good image quality, which is conducive to high-demand printing needs); Digital 135 SLR cameras are divided into Quan Huafu (because it is as big as 135 film) and APS (one circle smaller than 135 film) according to the size of the photoreceptor. When using the lens, the APS frame should be multiplied by a magnification to be the actual focal length (the magnification of each camera is slightly different), but the whole machine does not have this magnification.

If you are a beginner, you can consider the entry machine of 135 SLR to start your photography dream. It is strongly recommended to start with the film machine (that is, it costs a lot of money, but the effect is not beyond the digital machine), so that you can really understand what shutter, aperture, focal length and magical imaging principle are; Film can be regarded as a reverse film, and digital machines only have the same fate as others (only dreams). If you are a fanatic, the first choice is the whole machine. Of course, if you have good financial conditions, you must shoot above the medium format of the film. Otherwise, we will be sorry for the party and the people and live up to Jiangdong's parents.

If you don't have artistic skills, read more books in this field, such as famous paintings, or watch more movies. Finally, you should pick up the camera and shoot more. Practice is the best teacher.