How to use exposure compensation

Question 1: How to use exposure compensation for SLR cameras? Exposure compensation is an exposure control method, usually around 2 to 3EV. If the ambient light source is dark, you can increase the exposure value (for example, adjust it to+1EV, +2EV) to get the correct exposure. Exposure compensation is a shooting method that consciously changes the "appropriate" exposure parameters automatically calculated by the camera to make the photos brighter or darker. It is not complicated to master the histogram of correct exposure. The leftmost part of the histogram represents the darkest part, and the rightmost part represents the brightest part. The histogram of correct exposure should be reasonably distributed between bright and dark ends. The histogram of underexposed photos is mainly concentrated in the area that represents the dark part on the left, and the distribution can be used to judge whether the photos are slightly underexposed or seriously underexposed. Overexposed histogram The histogram of an overexposed photo is mainly concentrated in the area representing the bright part on the right, and the density of the histogram distribution can be used to judge whether the photo is slightly underexposed or seriously underexposed. ? Reasonable use of exposure compensation When shooting at ordinary times, you can judge the exposure of photos at any time by histogram, but some shooting environments, such as backlight and indoor scenes, sometimes show the histogram of correct exposure, but the subject is still underexposed. At this time, exposure compensation is needed. When shooting against the light, people are underexposed. By increasing the exposure compensation of EV value 1, accurate exposure can be obtained. The picture above shows the model shot in reverse light. When the camera is exposed normally, due to the influence of ambient light and camera metering system, the photos taken are often seriously underexposed, but the exposure to the surrounding environment is accurate. At this time, the camera exposure compensation can be set according to the light of the shooting environment, so as to improve the exposure compensation to obtain accurate exposure of the shooting object. ? A special form of exposure compensation-surround exposure surround exposure mode is for beginners, but for those who are not skilled in setting exposure compensation. If bracketing exposure is selected, the camera will take three consecutive photos with less than one exposure, normal exposure and transition exposure. Surround the exposure mode as much as possible to ensure that the shooting positions of the three photos are consistent. The three photos taken around the exposure mode are underexposed, normal exposed and overexposed from left to right.

Question 2: How to use exposure compensation? Under what circumstances are they used respectively? Generally speaking, in a white environment, the photometry is low and needs to be increased, and vice versa. A. When the shooting environment is dark and the brightness needs to be increased, the exposure can be compensated and appropriately increased when the flash cannot work. B. When the photographed white object looks gray or not white enough in the photo, the exposure should be increased. Simply put, the whiter the more, which seems to run counter to the basic principles and habits of exposure. Actually, 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. C, when you shoot in front of a bright background, such as in front of a sunny window, in front of a backlit scenery, etc. , increase exposure or use flash. D. When there is a beach, snow, sunny day or white background in front of you, increase the exposure and use the flash, otherwise the subject will be very dark. E. When shooting a snow scene, the reflection of the snow on the background light is particularly strong, and the photometric deviation of the camera is particularly large. Increase the exposure at this time, or the snow will turn gray. F, shooting black objects, when you look at the color change and gray in the photo, you should reduce the exposure to make the black more pure. G, when shooting in front of a black background, it is also necessary to reduce the exposure to avoid overexposure of the subject. (You need to increase exposure compensation to get enough exposure for night shooting) H. For night shooting, you need to turn off the flash, improve the exposure value and extend the exposure time of the camera to get gorgeous effects, which is especially important for automatic digital cameras without manual adjustment mode. Many people who use digital cameras feel that their night shooting ability is very poor. In fact, one of the important reasons is that they did not use the camera exposure method correctly. First, when it is cloudy and foggy, the environment is still bright, but the actual object illumination is obviously insufficient. Without exposure compensation, the photo may be dim. Appropriate exposure compensation, plus 0.3 to 0.7, can make the brightness of the scene more natural. J, in some artistic photography, such as taking high-profile photos, it is necessary to increase exposure compensation, form a big contrast photo, and better express the author's shooting intention. Similarly, in some cases, if it is necessary to deliberately reduce the brightness of photos, the exposure compensation should also be reduced. Being good at applying and reasonably using exposure compensation can greatly improve the success rate of your photographic works, and take photos with clear pictures, appropriate brightness and comfortable viewing, thus improving the shooting quality. If the summary is incomplete, please add 4. What is the purpose of opening grid lines on the screen? In addition to paying attention to the composition of gold dots, we should also pay attention to the following points: a, avoid straight lines running through both sides, especially avoid dividing photos into two horizontal or vertical lines. B, the treatment of vision. The horizon often appears in landscape works. In order to avoid the effect of dividing up and down, try to break the flatness of the horizon, such as using clouds, distant mountains, sunrises, sunsets or other buildings. In addition, the position of the horizon should also be arranged on the dividing line of the center of interest, and it should be kept horizontal (special creativity is another matter). C, shooting moving objects should leave a certain space before the movement. When the subject is moving, the viewer's eyes will habitually move in the direction of the subject's movement. If there is no space in front of the movement, it will give people a sense of oppression. In addition, usually the direction of the subject's gaze should also leave a relatively large space. B, visual balance A photo with a balanced composition can give people a sense of stability and coordination. There are two kinds of balance: symmetric balance and asymmetric balance. Asymmetric balanced combinations are usually more dynamic than symmetric balanced combinations. The size, shape, weight and direction of the scene, as well as the color, have an important influence on the visual balance. C the contrast between reality and reality refers to the clarity and ambiguity between the subject and the foreground and background of the space. The technique used is nothing more than hiding the virtual and showing the real, alternating the virtual and the real, and supporting the real with the virtual. Its purpose is to highlight the main body, render the atmosphere and enhance the sense of space depth. Reality mainly represents the subject of the subject; Imagination is mainly to show the subject's companions to set off the subject, which is an important link in the artistic conception of the picture. Pay attention to the composition of rhythm and melody photography, and the subjects appear alternately in the same or similar form and repeat in order, thus forming rhythm; If the rhythm shows dynamic changes such as lines, comfort, harmony and ups and downs, it becomes a melody, thus making the picture beautiful, lyrical and smooth. Rhythm and melody are important links to deepen the theme, including the contrast of lines, colors and light ... >>

Question 3: How to use the "exposure compensation" function to quote the information in my space is introduced in detail, and I hope it will help you.

Question 4: How to adjust the exposure compensation introduced by SLR? When shooting, we always hear people say that our photos are underexposed or overexposed. For photographers who are new to the camera, they often just know how to extend and shorten the exposure time, or open and narrow the aperture to correct this "overexposure and underexposure". However, the result of this is often more and more confused in the face of exposure. In fact, for exposure, there is always an important parameter in the camera to remind us, that is, exposure compensation. Exposure compensation is not a verb or an action, but a name. Exposure compensation is a parameter used to quantify the brightness of photos. The reason why we can see everything in the world is that light shines on objects and then reflects into our eyes to become an image. If extreme white reflects 100% of the light, then extreme black completely absorbs the light and reflects 0%. Gray between extreme white and extreme black does not reflect 50% of the light as we thought. After precise measurement by scientists, the gray in the middle actually reflects 18% of the light. So the brightness in the middle is also called 18 degree gray. ▲ Different brightness and 18 gray. If we use the camera AUTO to take photos at different times and in different scenes, we will find that although the light intensity is very different, the brightness of the photos taken is not very different. This is because the camera will set the corresponding aperture, shutter and sensitivity according to the metering system when it is in automatic mode, thus taking a photo of 18 gray-not too bright, not too dark, just right. If we quantify this just-right brightness, the exposure compensation for such a photo with medium brightness is 0. ▲ For a photo with exposure compensation of 0, the exposure compensation of general cameras ranges from -2 to +2, and that of some advanced cameras ranges from -3 to +3. If shooting the same scene, the brightness of the photo with exposure compensation of-1 is half that of the photo with exposure compensation of 0, and the brightness of the photo with exposure compensation of -2 is 1/4 of the photo with exposure compensation of 0. On the other hand, the brightness of photos with exposure compensation of+1 is twice as high as that of photos with exposure compensation of 0. For many scenes, 18 gray is not a good brightness. For example, if we shoot a snow scene, the camera's metering system will not know whether it is snow or white, and will foolishly think that it is too bright here, so if the exposure compensation is 0, then the shot snow scene is a scene covered with "gray" snow. If we shoot a coal yard, the camera will foolishly think that it is too dark here. If the exposure compensation is 0, the photos taken are all "gray" coal. None of this is what we want. Therefore, when shooting the snow scene, it is necessary to appropriately increase the exposure compensation, so as to make the snow white; When shooting coal piles, we should reduce the exposure compensation and make the coal black. ▲ Appropriately increase exposure compensation. Snow is white. For beginners, it must be remembered that exposure compensation can't go wrong: exposure compensation has nothing to do with the brightness of the environment when shooting, but only with the brightness of the finished photo. Even if it is dark around, if exposure compensation is added, the final photo will be very bright; Even if the surrounding lights are bright, if the exposure is reduced, the final photo will be dim. From the above description, we know that exposure compensation is actually adjusted in some special scenes or special circumstances. For example, the object you shoot is bright and occupies a large area in the picture. In order to reflect the original brightness of the object, you should make the photo brighter and increase the exposure compensation. Similarly, if the object itself is dark and occupies a large area in the picture, in order to reflect the original color of the object, the photo will be darkened to reduce the exposure compensation. In addition, sometimes we want to explain that cheerful scenes will also improve the brightness of photos and increase exposure compensation. For some depressed and gloomy subjects, it is necessary to appropriately reduce the brightness of photos and reduce exposure compensation. ▲ In sad scenes, the brightness of many photos can reflect the photographer's shooting intention, so it can be said that exposure compensation is an important parameter to reflect the photographer's shooting intention in photos. On our camera, as long as it is not a pure automatic camera, we can adjust the exposure compensation. If your camera only has automatic function, forget it. General exposure compensation can only be adjusted in P (program exposure), A (aperture priority) and S (shutter priority). Although exposure compensation cannot be directly adjusted in M (Manual Shift), it can be controlled by adjusting aperture, shutter and sensitivity. ▲ Exposure compensation scale in camera shoulder screen. Exposure compensation usually appears in the form of scale or numerical value in cameras. Absence ... >>

Question 5: How to use the exposure compensation function correctly? Please refer to the information in my space and introduce it in detail. I hope it helps you.

Question 6: What is exposure compensation? How to apply exposure compensation? What is exposure compensation? Photography is actually a process in which a photographer uses his own photography technology to calculate the ambient light and capture the scene image through photographic equipment. This process is related to the aperture value of the device (controlling the luminous flux entering the camera per unit time), shutter speed (exposure time) and ISO (sensitivity to light). Nowadays, traditional devices and DC will calculate the ambient light through their own internal programs, and automatically adjust the aperture, shutter and even ISO value. However, in the Gao Fancha environment with complex light and strong contrast, the photos taken by P (programmed automatic exposure) blocks are often unsatisfactory and the effect is not the best. At this time, the photographer needs to manually adjust the exposure parameters of the equipment, that is, the exposure compensation EV (exposure value).

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).

Without exposure compensation, the underexposure of lotus increased the exposure and improved the brightness of the flower. When the photographed white object looks gray or not white enough in the photo, the exposure should be increased. Simply put, it is "the whiter the better", which seems to run counter to the basic principles and habits of exposure, but it is not. This is because the camera's metering often focuses on the central subject, and the white subject will make the camera mistakenly think that the environment is bright, so it is underexposed, which is also the majority. The following are typical shooting scenes that need exposure compensation.

Forward salary:

1. When shooting text (black text on white paper)

2. Backlit portrait

3. Extremely bright scenery (such as snow) and highly reflective objects.

4. Negative compensation when the sky is clear:

1. Spotlight photos, especially when the background is dark.

2. When shooting text (white text on black paper)

3. Scenery with low reflection, such as taking photos of green or dark leaves.

Why exposure compensation? The human eye adjusts the pupil size by stabilizing the ambient light, and the middle gray level 18% is the average illumination value in our daily life scene. If this stable value is not reached within the range of adjusting the pupil of the human eye, the ability of the human eye to correctly judge and identify the environment will be reduced. Photographic equipment is based on this principle to calculate ambient light. The camera completes the measurement of light after half pressing the shutter, and automatically adjusts the aperture, shutter and ISO value after program calculation to wait for the next operation. To put it simply: the bright and dark objects in the photos taken by "program automatic exposure" can show a medium gray tone of 18%. Like human eyes, the camera can't correctly show the ambient light beyond this value on the negative /CCD. Several methods of exposure compensation There are many methods of exposure compensation and adjustment. Generally, there are external light compensation such as flash lamp, photographic lamp and reflector. Adjustment of aperture value and compensation of luminous flux parameters for exposure time. Strictly speaking, the above compensation methods should be classified as the concept of "light compensation or exposure control". There is also the adjustment and compensation of EV. The compensation of external light by flash lamp is hard in the absence of other supplementary light sources, which often leaves obvious shadows on the background of the subject, and at the same time makes the highly reflective part of the subject lose its sense of hierarchy and has serious distortion, so it is rarely used. Photographic lighting can create a good shooting effect, but it is often limited to the studio due to the limitations of conditions. Reflective plates with soft light and supplementary light effect are widely used in portrait photography in small scenes, mostly for supplementary light on the main face, and their limitations are self-evident. The adjustment of aperture and shutter luminous flux parameters is often due to the need to consider the influence of depth of field and moving objects in the shooting process, which will have a feeling of being stretched in practical application. For the popular equipment, the most common method is to adjust EV to achieve the purpose of exposure compensation.

Ke Mei α-7D exposure compensation turntable, yellow label 1/3EV, white label 1/2EV, the adjustment range of most consumer digital cameras is 2.0EV, and the DC of high-end products can reach 3.0EV. One of the indicators to test a DC is its manual adjustment function, but in E >: >;

Question 7: What is the principle of exposure compensation and how to use it well? Exposure compensation is to change the exposure after the camera completes the usual photometry to achieve the required exposure level. In fact, it is equivalent to overexposure or underexposure under manual operation.

I don't know what hardware and software you are talking about. Usually, for example, in an automatic program, when you use positive exposure compensation, the camera will open the aperture and reduce the shutter speed to meet your requirements, while negative exposure compensation (dimming) will, on the contrary, reduce the aperture or increase the shutter speed. I don't know if this is what you call "hardware" change.

Some low-end cameras will increase the sensitivity (ISO) to meet your positive compensation requirements when the aperture and shutter are not up to the requirements, which is actually at the expense of image quality. This may be the software change you are talking about.

We usually shoot life, but we are actually shooting people. When the backlight is strong (for example, the back is facing the sun, windows and other light sources), appropriate exposure compensation should be carried out to make the light of the characters correct and the background overexposed. When shooting in a dark background (such as a large dark forest \ dark building, etc. ) should be negatively compensated to avoid overexposure of characters.

Question 8: How to set exposure compensation for Canon digital cameras? Yes, I suggest you take a good look at the instructions, which are very detailed.

We don't think there is much difference between machines with the same parameters and the same price, but the reason why some people's photos look good or not depends entirely on whether the camera's performance is brought into play. The key is to read the manual and know your own equipment. Only by knowing your own equipment can you take good photos!

We suggest you read the instructions first, which will help you maximize the performance of the camera!

Finally, Zhuomei. I wish you a smooth work and study, buy your favorite camera and make more good films!

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Question 9: How to use Nikon's exposure compensation According to the photometric data of the camera's exposure meter, adjust the exposure compensation according to the principle of "white plus black minus". The specific compensation effect is based on the histogram of the photo (you can choose the "overview" option in the playback and display options), and then make corresponding adjustments.