What function does a digital camera have?

Abstract: What functions should a general household digital camera have? Generally, there are Auto/A/S/P/M characters on the top dial of digital cameras. What do these characters represent? What do the buttons of SLR cameras do? There are many buttons on the fuselage with complicated functions, which makes many photographers dizzy and don't know how to use them. Here are some functions of the camera button. What function does a digital camera have? Tell you about the buttons of the SLR camera.

Function introduction of common digital camera.

(1)Auto As the name implies, this is a fully automatic gear. In traditional cameras, Auto gives the shutter and aperture according to the built-in exposure meter. It's that simple. All you need to do is press the shutter. In DC, the camera needs to do more work, that is, white balance and ISO. Of course, in the default mode, it is also automatic white balance and ISO.

(2) one (AV)

The first gear refers to the aperture priority mode. This is also the most popular mode. So what did document A do? Let's talk about the name of aperture first. All you can adjust in this file is aperture. The camera will give the appropriate shutter speed according to the built-in metering system to ensure the correct exposure of the camera. Of course, in DC, you can also manually control the white balance, exposure compensation and metering mode (spot measurement/matrix/medium weight), which Auto can't do. Let's call it a semi-automatic handle. Aperture priority can control the depth of field well. If you understand the principle of reciprocal rate, you can easily control the shutter speed with the aperture. The larger the aperture, the faster the shutter, and vice versa. So this file basically allows you to complete all the shooting work. Of course, you should be very careful about shutter overflow (the shutter speed is too fast under large aperture, which exceeds the rated speed of the camera, and the camera will prompt you at this time).

(3)S (TV) S file is just the opposite of A file, which is the shutter speed priority mode. In this mode, you can adjust not the aperture, but the speed. Of course, you can also adjust the metering mode such as white balance exposure compensation. The camera will give the appropriate aperture according to the speed you choose. This mode is generally used for sports photography or fixed-speed photography. For example, if you want to shoot running water, you should fix the shutter speed at 1/4. It's best to use S file at this time. Please note, however, that the S gear will overflow the aperture (the maximum aperture will be exceeded when telling the shutter, or the minimum aperture will be exceeded when the shutter is at low speed). You can also adjust the aperture by speed according to the law of reciprocity.

(4) 4) The PP file is a program file, and the program is exposed. In fact, to put it bluntly, it is the combination of A file and S file. In this file, you can adjust the white balance, exposure compensation and metering mode. The camera will give a reasonable combination of aperture and shutter according to the built-in metering system. You just need to use the turntable to choose the right one from the middle. In this mode, there is no need to consider overflow. The others are the same as A/S.

(5) The 5mm file is a manual file. The built-in metering system can't control the aperture and shutter, and the aperture speed can be adjusted at will. If there is no exposure meter outside, this file is prone to underexposure or overexposure, and only in some extreme cases can M file be used. In the Auto/A/S/P file, the exposure value is locked by the built-in exposure meter, and the exposure value cannot be changed by adjusting the aperture, only the depth of field can be changed. Exposure value will only change in the M file, because the M file is not limited by the built-in exposure meter. In A/P/S, you want to change the exposure value by adjusting the exposure compensation. In A file, adjusting exposure compensation is actually adjusting speed, in S file, adjusting aperture, and in P file.

Function key of SLR camera

Introduction of Front Key of SLR Camera

There are two buttons on the left and right of the lens bayonet, which are: depth of field preview button and Fn custom function button.

Preview of Depth of Field: Press this button, the lens aperture will shrink to the aperture value you set, and instantly darken in the viewfinder. This is because when shooting a normal view, the camera will automatically enlarge the aperture of the lens to the maximum to get more light, which will make the viewfinder bright and easy to focus. This function is of little use in daily shooting. Only when using the macro lens, press the preview of the depth of field to see if the subject is completely clear within the depth of field, so it is easier to adjust the aperture value.

Fn soft key: it is mainly to let the user set a designated function for Fn in the menu, which is convenient for quick adjustment when shooting.

There are also two keys on the right side of the lens bayonet, namely: the lens bayonet lock and the focus drive mode switching key.

Lens bayonet lock: As the name implies, it is used when removing the lens. When you unload the lens, you need to hold down this key and then rotate the lens to unload the lens.

Focus drive mode switching key: used to switch three focus modes, namely: c "continuous focus" is used to shoot moving objects, and the system will work continuously in the focus state, and the shutter can be pressed at any time; S's "single focus" is used to shoot still objects, and the shutter system focuses once every half time. Different from continuous focusing, if the camera is out of focus, you can't press the shutter to shoot; M "Manual focusing" is used for shooting scenes that need high focusing accuracy, such as macro photography, and it is necessary to manually rotate the lens focusing ring for focusing shooting.

Introduction of buttons on the back of SLR camera

Left key on the back of the fuselage

Photo playback: used to play back photos after shooting.

Photo Delete: used to delete unwanted photos by pressing this key twice while playing the preview photos.

Menu function key: Press this key when entering the SLR menu setting.

Photo file locking: When playing back a picture, if a photo is very important and you are worried about deleting it by mistake, you can use this function to lock the photo file, and the properties of the locked photo file are displayed as read-only properties in the computer. This function uses the picture of the key as the display.

Photo Preview Zoom-out Key: When previewing photos, you can zoom out the photos with this function key. Press this button several times to increase the number of photos displayed on the same screen.

Photo Preview Enlarge Key: When previewing photos, you can enlarge photos through this function key.

Setting OK key: All menu operations confirm the setting function through this key.

Button in the upper right corner of the back of the fuselage

On the upper right of the back of the machine, there are mainly metering mode selection key, automatic metering/autofocus lock key, AF focusing start key and rear wheel.

Photometric mode selection key: You can select three photometric modes, namely spot photometry, 3D matrix photometry (Nikon's unique technology) and central key photometry.

AE automatic metering /AF automatic focusing lock key: AE automatic metering lock function allows you to lock the metered exposure value, even if the light changes, the exposure value will not change. AF autofocus lock key is that when you finish the focusing operation, you can always keep the correct focusing by pressing this key. Even if you press the shutter to focus again, the focusing system will not start.

AF focus start key: This function key is used to start the AF autofocus function, which can be used as focus independently. Rear function wheel: it is mainly used to adjust the aperture or shutter parameters with the front function wheel, and their functions can also be interchanged in the menu. In play preview mode, this key is used to switch the photo display parameters.

Button in the lower right corner of the back of the fuselage

Focus/function selection key: used to select the focus when focusing, or select different function options from the menu. This multi-direction key is similar to the direction key of the game console handle, which is very convenient to operate.

Focus/function selection key lock: When the control lever is turned from "white point" to "L", the use of the middle function key can be locked.

Focus mode selection key: used to switch three focus modes, from top to bottom: full automatic focus mode, which can't select the focus when using, and the camera will automatically identify the object and focus; Dynamic area autofocus, you can choose the focus when using. When focusing, the camera will use the focus you choose and several focus points around it to assist focusing. This function is mainly used to shoot moving objects. Single focus, you can choose 5 1 to focus on one of the focuses, which is also one of the most commonly used functions.

Back screen parameter information display key: used to display relevant parameter information on the screen.

Top button of SLR camera

On the left shoulder of the fuselage are some commonly used keys, namely photo format (image quality) selection key, white balance selection key, shooting function selection key and ISO sensitivity selection key.

Photo format (quality) selection key: press and hold this function key to select the photo format or photo quality before turning the front wheel or the rear wheel.

White balance selection key: Press and hold this function key to select different white balance modes before dialing the front wheel or the rear wheel.

ISO sensitivity selection key: By pressing and holding this key, you can select different ISO sensitivities before turning the front or rear wheels.

Shooting mode selection key: Set entry-level low-end models in the menu. Let me introduce what these functions are for.

S: single engine.

CL: Low-speed continuous shooting. You can set the number of low-speed continuous shooting sheets in the menu.

CH: Even if you are tall, you can set the number of continuous shooting sheets in the menu.

Lu: Real-time framing function, which can be used for focusing framing shooting through the back screen just like using DC.

M-up: the mirror is pre-raised. With this function, the mirror will be lifted before the shutter is opened, and then the shutter will open and close normally, which can reduce the jitter caused by the mirror vibration.

SLR camera right shoulder button

Shutter button: mainly used for shooting. Half of this button is used to start autofocus, and all buttons are used to take pictures.

Power supply/screen light switch: the switch control of the camera's main power supply is very useful when setting the light bulb icon to turn on the screen background light and adjusting the parameter settings in poor light environment.

Exposure mode selection key: press and hold this key, and you can switch different exposure modes after dialing the function wheel, including: A-file aperture priority, S-file speed priority, P-file program exposure and M-file manual exposure. This function key is only available in Nikon mid-range and high-end machines, and it is realized in entry-level low-end machines through the function mode dial in the right shoulder position.

Exposure compensation selection key: when metering, increase or decrease metering parameters. The specific operation is to hold down this key and then dial the wheel.