How to use SLR exposure compensation

Question 1: How to adjust the exposure compensation for the introduction of 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 2: Exposure compensation of SLR cameras. Is exposure compensation only useful in A /S /P files?

Answer: Yes.

That is to say, in the M file. . . Is it chicken ribs?

Answer: This is a mistake. Exposure compensation is only designed for automatic (P mode) and semi-automatic (A mode, some cameras are in S mode /T mode), not for M file.

When it comes to exposure compensation, we have to mention the metering mode of the camera. At present, the commonly used electronic metering mode is based on 18% gray scale. Whether it is P, M or A/S files, the camera will regard the subject as gray, and then give a reference standard. So under the automatic function, the white object is dark and the black object is white.

In order to reflect the real color more accurately, or express some special feelings of photographers, it is necessary to adjust the exposure to increase or decrease. In manual mode, you can increase or decrease the light according to your own wishes, and "exposure compensation" is realized through the human brain; In automatic or semi-automatic mode, it can only be realized by the "exposure compensation" function of the camera.

Film age, and exposure compensation. How to increase or decrease is experience.

Just increase the aperture or shutter by one step, and the amount of light will double. For example, F/8,1125 has a fixed light quantity twice that of F/8, 1/250. If you reduce one gear, you will reduce it by half.

At the same time, increase one gear and get 4 times exposure.

Question 3: Is it useful to set M exposure compensation for SLR cameras? It is useless to set exposure compensation for m files. If you feel underexposed, increase the aperture or reduce the speed; If you feel overexposed, reduce the aperture or increase the speed. Exposure compensation is only useful in program, scene, aperture priority and speed priority modes.

Question 4: 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 has been 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!

At the same time, you are also welcome to pay attention to Zhuomei.com on Sina Weibo and directly search Zhuomei.com!

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: Can SLR cameras be forced to compensate for exposure in manual mode? The so-called exposure compensation is also carried out by changing the aperture or shutter.

Since you used the M file, of course, there is no exposure compensation.

As for what you said, either the information is wrong or the flash exposure compensation. I use a 500D, and the flash exposure compensation is plus or minus 2*** 12, which can increase the brightness of the flash when shooting. It should be to adjust the flash power.

Question 7: 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.

Question 8: What is the exposure compensation principle of SLR -3 to +3? Officially, it is called a shooting method that consciously changes the "appropriate" exposure parameters automatically calculated by the camera to make the photos brighter or darker. But specifically, for example, if you want to shoot something with a big brightness contrast, the metering system in the camera will always be based on the bright object, so the photos taken will be different from the situation at that time! For example, if you shoot a room with only one lamp, if you focus on the light, you should adjust the exposure compensation to about +2, otherwise the surrounding light will be black and the contrast will be great. Only after the exposure compensation is turned on will exposure value make some adjustments to achieve the most accurate exposure! You can also use this underexposure principle to create. For example, if you want to shoot a room with only one light just now, and you want to make the room dark except for the light, you just need to adjust the exposure compensation to -3, and the photos you take will only be bright near the light, and everything else will be black! This is the principle and purpose of exposure compensation! I hope I can help you understand the role of exposure compensation!

Question 9: Where is the exposure compensation for Canon cameras? Exposure compensation for all cameras is a "+/-"key. As long as you see this sign, the key is the exposure compensation key.

Question 10: 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 dim, you can increase the exposure value (for example, adjust it to+1EV and +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.