Ask a photographer or cameraman for help! I want to buy a digital camera. What's the difference between a fully automatic camera and a fully manual camera? A fully manual camera is usually possible.

Aperture, shutter and ISO are the three elements of exposure. At present, there is no full manual camera, and it is basically complicated. The so-called full manual or manual exposure mode, that is, M, generally speaking, the so-called automatic means that you just press the shutter and leave everything else to the camera, that is, the so-called fool program P, mainly the low-end card machine. ISO and exposure compensation are basically available. The only difference is that the high-end compensation value can be set manually, while the automatic compensation value is plus or minus one level. In different shooting environments, the combination of shutter, aperture and ISO is very important, which not only affects the imaging quality, but also affects the shooting effect you hope to achieve. For example, different apertures have different depth of field. Many times, you will see some portraits or flowers with clear themes, but the background is very vague. This is the effect of large aperture, that is, the depth of field is very shallow; Different shutters will have different dynamic effects on different works; ISO is different, the picture texture is different. You must practice this. No matter what others say, you may still be at a loss. Generally, you can manually adjust the parameters as long as you see A(AV), S and M on the camera adjustment panel.