The operation of Sony h 400 camera explains what needs to be done when using A-file photography.

A file is aperture priority, that is, the photographer sets the aperture, and the camera program controls the shutter speed to keep the exposure accurate.

This is a bit of a problem. What is an aperture? What is shutter speed?

Suppose the photo is a room, and you need to put 100 people in this room (the above exposure accuracy). The gap is the gate, and the door is wide open, so people have less time to come in. The smaller the door, the more time it takes. The time taken is the shutter speed.

After understanding this, you will generally think, "Why should I use gear? What effect or purpose do I want to achieve? "

The landlord should have seen photos with clear characters but blurred backgrounds in figure photography and photos with clear distances in landscape photography, right?

The camera has a characteristic when shooting, that is, the larger the aperture, the smaller the clear range; Conversely, the smaller the aperture, the larger the clear range. This is technically called the depth of field range.

So if you want a smaller clear range, you need to set a larger aperture, such as 2.8 and 3.5. At this time, because the clear distance is small, it is necessary to pay attention to accurate ranging;

For a larger clear range, you can set a smaller aperture, such as16,22. At this time, because of the small aperture (small door), the exposure time is longer. Do you want to consider whether the camera will shake? Will the subject be blurred if he doesn't move? Generally, the safe value that can guarantee not shaking when holding is the length of your lens. For example, for a 50mm lens, the safety value is 1/50 seconds, and for a 200mm lens, 1/200 seconds. Below this value, it is recommended to use a tripod and other fixed cameras.

These two points are the most basic things to pay attention to in the first contact, so that most photos should be able to reach their own satisfactory range.

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