Photography Xiaobai: How is the IOS sensitivity of SLR generally set?

General sensitivity settings should be set according to weather or light conditions.

1, ISO is set to: 100-300 in sunny days.

2. ISO is set to 200-400 in rainy days.

3. At night or in a very dark environment, ISO is set to 100+ flash or manual lighting. At this time, you can use a tripod or a fixture to fix the camera to reduce the ISO value.

4. Scenes such as parties/concerts/dances are easy to cause insufficient light. You can use ISO800 or low-value flash.

According to the environment, choose the lowest ISO sensitivity to shoot, if it is not a very dark environment, it is generally best not to exceed 800; When shooting at night or in an environment where the ISO value needs to be improved for a long time, the noise will inevitably increase. In this case, the noise reduction function of SLR is usually turned on to reduce the noise, or the noise of the picture is reduced through post-processing.

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Skills of using SLR

1, shoot the scenery. When you need to pay attention to the weather when shooting scenery, it is best to shoot the city scenery in the evening, and the outdoor scenery is sunny. The camera sets the AV file first, the aperture should be kept at F5.6-F8 as far as possible, and the focus should be infinitely far away from the sky, so as to obtain a high-quality landscape picture.

2. People shooting. People usually shoot with a relatively large aperture (within f5.6) and a focal length of more than 50 mm The shooting distance depends on the whole body, chest circumference and head shot, so the background is blurred and Av files are used! Iso 100 with good light environment and less than iso400 with poor light environment. People in sports express their sense of movement by chasing shots.

3. Aperture. The larger this value, the smaller the aperture, so the larger the aperture, indicating that more light can reach cmos and a faster shutter can be obtained. Double the aperture and the shutter will be twice as fast. At the same time, a large aperture will get a shallow depth of field, which means that the background is more blurred. In addition, the definition of aperture is calculated based on human eye 1.0.

4. Application of shutter: When shooting dynamic things, try to choose a fast shutter to prevent objects from blurring. If you need to shoot continuous motion, you need to use a slow shutter Safety shutter refers to the lowest shutter speed when holding it, in order to ensure the clarity of the picture. The following is a calculation method of safe shutter speed.

5. SLR photography skills for plum blossom shooting: color matching. According to different varieties, the colors of plum blossom are red, pink, yellow and white. Choose the right combination of plum blossom and background color to find color harmony. For example, pink flowers and rough branches set each other off, Bai Mei on a black background and high-profile cranberries on a white background.

Single-lens photography technique plum blossom shot: a good contrast between reality and reality. It is particularly important to create a suitable visual space and highlight the artistic conception. We should choose the appropriate aperture to control the depth of field with the support of camera aperture priority mode or manual exposure mode. In this way, the plum blossom in front of the mirror becomes the golden mean in reality and the good in artistic conception.

6. Try shooting in manual mode. For a camera, the parameters related to imaging effect usually include: three illuminance, exposure and white balance. In this mode, the above three parameters are controlled by the camera itself, and the mode cannot be changed automatically. However, in some complicated lighting conditions indoors or at night, automatic mode can't help us to take satisfactory photos.