What does camera exposure mean?

Question 1: What does camera exposure mean? The simplest thing is to compare underexposure and exposure compensation in the histogram in your camera and adjust it according to the subject you are shooting. It is best to adjust gradually when adjusting.

Question 2: What is the meaning of exposure in a camera? Exposure refers to more light in exposure. If the exposure is too low, the color of the photo will darken; If the exposure is too low, the color of the photo will darken; If it is too low or too high, the details in the photo will be lost. Exposure is the most primitive key factor of composition, which is mainly determined by aperture and shutter.

Question 3: What does camera exposure compensation mean? Camera exposure compensation (SLR is a wave wheel, micro is a wave wheel, some cards are mainly buttons, and some use control rings such as RX 100) mainly to increase or decrease exposure.

1, exposure compensation is mainly used for semi-automatic files, namely, P file (manually setting sensitivity, other automatic), A file (manually controlling aperture, other automatic) and S file (manually controlling shutter speed, other automatic);

2. Exposure compensation is very important and often used. Because semi-automatic is a semi-fool, some scenes need to be corrected;

3. The general rule of exposure compensation is white plus black minus, that is, in a scene with a relatively large light ratio, exposure compensation should be increased in order to focus on the bright part and avoid the dark part, and decreased in order to focus on the dark part and avoid the white part. For example, focusing on a large area of snow, because white is easy to reflect light, the machine will think that the subject is very bright and will speed up the shutter speed. At this time, it is necessary to change the shutter speed, that is, increase the exposure. On the contrary, if you measure light on something black, such as a mouse or camera bag, you may need to reduce the exposure, but this is not absolute. In the scene with small light ratio, the method of reducing white and adding black is also adopted (mainly affecting the style of photos, such as bright or dark photos);

4. Exposure compensation is generally increased or decreased by one third, and one-half or one file can also be set;

5. How to grasp the compensation amount should be judged according to the on-site situation. Beginners can take a beat in three gears, taking the most satisfactory imaging as the standard.

6. Exposure compensation is not required for fully automatic gear shifting and fully manual gear shifting (M-range).

I hope it will help the landlord.

Question 4: What are camera exposure and iso aperture? Compare the human eye to a camera, and you will understand it easily.

Please close your eyes, then open your eyes and close them quickly. This is an exposure and the corresponding opening and closing time is the exposure time. You can find that the shorter the exposure time, the darker what you see.

Iso is the sensitivity, that is, the sensitivity to light. At night, some people have good eyesight at night, and some people are night blind. The former has high ISO and the latter has low ISO.

The aperture is like your pupil. When the pupil is wide open, it gets more light, and when the pupil is small, it gets less light. When the sun is dazzling, the tripod will get smaller. If you control the amount of light, it won't be too dazzling. Similarly, when the light is very dark, you can only see clearly if the aperture is wide open.

Question 5: What do you mean by the automatic exposure of the video in the mobile phone camera? The so-called fool mode, or P-mode, the camera can automatically set the shutter speed and aperture value according to the exposure value of the shooting picture measured by the metering system and the shutter and aperture exposure combination set by the manufacturer during production.

Question 6: What do you mean by long exposure time? That is to say, when shooting, use a slow shutter speed (ranging from a few seconds to several hours) and set the aperture and other values accordingly to achieve a very strange shooting effect.

I took this, and the shutter speed was 30s.

Not necessarily. It depends on the rated slowest shutter speed of the camera. I shot this for 30 seconds with D90, and then I have to use B if I want to slow down. I have to see for myself. The slowest paraxial ratio of Seagull 205 still in use is 1s, followed by B. If it is a fully automatic camera, it will be a bit troublesome because you can't set the shutter speed yourself, but if there is a long exposure shooting mode,

Question 7: What does "exposure compensation" mean in mobile phone cameras? Simply put, "exposure compensation" means that the photographer artificially corrects the error caused by complex light in the photographic scene (increase or decrease, that is, positive and negative compensation) to ensure correct exposure. This correction process is called "exposure compensation".

Question 8: What does exposure compensation of camera mean? How to apply it specifically? Exposure compensation exposure compensation 1. What is exposure compensation? Exposure compensation is also an exposure control method, generally around 2-3 ev. If the ambient light source is dark, you can increase the exposure value (for example, adjust it to+1EV and +2EV) to highlight the clarity of the picture. In the process of digital camera shooting, if you press the half shutter, a picture similar to the final effect will be displayed on the LCD screen, and all focusing and exposure will start. The exposure at this time is the exposure of the final picture. If the picture is obviously bright or dark, it means that the automatic metering accuracy of the camera has a big deviation, and exposure compensation should be forced. But sometimes the brightness displayed during shooting is different from the actual shooting result. Digital camera can browse the picture immediately after shooting, and at this time, you can see the brightness of the shot picture more accurately, and there will be no discrepancy. If the shooting result is obviously bright or dark, it is necessary to shoot again and force exposure compensation. When the shooting environment is dark and it is necessary to increase the brightness, and the flash can't work, exposure compensation can be carried out to increase the exposure appropriately. When making exposure compensation, if the photo is too dark, the EV value should be increased. Every time the EV value increases, it is 1.0, which is equivalent to doubling the light input. If the photo is too bright, the EV value should be reduced. Every time the EV value is reduced, it is equivalent to doubling the amount of light entering. According to different cameras, the compensation interval can be adjusted in units of 1/2(0.5) or 1/3(0.3). When the photographed white object looks gray or not white enough in the photo, it is necessary to increase the exposure, which simply means "the whiter the more". This seems to run counter to the basic principles and habits of exposure, but it is not. This is because the camera's photometry often focuses on the central subject, and the white subject will make the camera mistakenly think that the environment is very bright, so it is underexposed, which is also a common problem that most beginners are prone to make. Because the shutter time or aperture size of the camera is limited, it is impossible to reach the adjustment range of 2EV all the time, so exposure compensation is not omnipotent, and it is still possible to underexpose in too dark environment. At this time, it is necessary to consider matching the flash or increasing the ISO sensitivity of the camera to improve the brightness of the picture. Almost all digital cameras have the same exposure compensation range, which can be added and subtracted within plus or minus 2EV, but the addition and subtraction are not continuous, but jump at intervals of 1/2EV or 1/3EV. Early old digital cameras, such as Kodak's DC2/KOOC-0/5, were separated by/KOOC-0//2EV, so there were -2.0, -65438 +0.5,-/KOOC-0/.5,-/KOOC-. So there are -2.0, -65438 +0.7,-1,-1.7, -0.3 and +0.3,+1.0,+1.3. Generally speaking, the smaller the brightness contrast of the scene, the more accurate the exposure, otherwise the deviation will increase. There are high and low grades of cameras. If the grade is high, the measurement will be more accurate, and if the grade is low, the deviation will increase. If it is a traditional camera, the film tolerance is relatively large, and the exposure deviation will not be a big problem within a certain range, but the CCD tolerance of a digital camera is relatively small, and a slight exposure deviation may affect the overall effect. In a word, the adjustment of exposure compensation is determined by experience and sensitivity to color. Users must compare the image quality, sharpness, reduction and noise under different exposure compensation in order to take the best photos. Generally speaking, a negative with rich layering can be called correct exposure. Most modern cameras have the function of internal metering. In most cases, shooting according to the data provided by the exposure meter can make most negatives get basically correct exposure. This is because the exposure meter reads 65,438+08% gray tone, and 65,438+08% gray is the average light value in our daily life scenes, such as our skin color. However, the correct exposure is not equal to the best exposure, especially when white or bright objects are dominant in the picture, there will be obvious deviation if shooting only according to the photometric data of the camera, that is to say, the white objects, bright objects and dark objects in the picture are all 18% gray scale, which is naturally unsatisfactory. Therefore, exposure compensation plays an extremely important role in the absence of incident exposure meter or gray board. Our common cameras with automatic exposure function generally have exposure compensation function. & gt

Question 9: What does exposure mean in a digital camera? Exposure is the amount of light received by the photoreceptor during the exposure time. It is concluded that exposure = the speed of light received by the photoreceptor × exposure time, and the speed of light received by the photoreceptor = ambient light intensity × aperture.

Question 10: What does exposure mean in taking pictures? Luminous flux is the amount of light that enters the camera when the shutter is opened and closed. The more light enters, the brighter and darker the film is. That's it. It won't be popular anymore.