Shulou(Shulou.com)11/24 Report--

The low light environment is a headache for many people, because the weak light exposure is difficult to control, and it is easy to have detailed problems, and it is even more difficult to take a texture of the photo.

In a low-light environment, there are actually many factors that we cannot control by ourselves. for example, the performance of high sensitivity is directly affected by the equipment itself, and machines with large frames have natural advantages.

However, as photographers, we are not completely powerless. In the face of a low light environment, we can pay attention to the following points:

1. First of all, we should make it clear that there is a difference between the weak light environment and the normal environment, which may directly affect the final picture quality of the photo, and the best and most direct way to make up for it is to replenish the light.

We can deal with the supplementary light from two angles:

(1) the use of light compensation equipment with its own light, reflector, flash, mobile phone and so on are good light supplement equipment, if you need to often shoot in low light or high light contrast environment, these equipment is still necessary.

(2) make good use of the existing light. If we do not have the equipment to make up the light on hand, then we can use the existing light as much as possible to find the light source and the direction of the light, so as to make the subject as bright as possible.

If there are glass, water and other elements that can reflect light in the scene, we can also make good use of it.

In short, in the low light environment, reasonable supplementary light is our first choice, which is the most effective way to increase the photo limit.

two。 Camera operation in a low-light environment can also be understood as a reduction in light entering the camera, and we can also deal with this by adjusting the camera parameters:

(1) using high sensitivity and high sensitivity is one of the most effective ways for the camera to deal with the weak light environment. Many people will worry that high sensitivity will affect the picture quality, but in fact, the impact of high sensitivity is not so great. Let's take a look at a picture:

This is the award-winning work of this year's Hosai. Photographer Mads Nissen (Mads Nissen) uses 6400 sensitivity, but the photo is still full of details and texture. If you look closely, you can still see a slight noise, but considering the shooting environment, and the entries generally do not allow a large later period, the effect of this photo is already very good.

From this, we can see that there is no need to worry too much about the high sensitivity, of course, it also has something to do with the full-frame equipment he uses, and the high-sensitivity performance of the remnant machine will be worse by comparison.

Mads Nissen 2021 award-winning works to say a few words, such as the above photos taken at a rare time, Medes may be to avoid photo paste, using a shutter speed of 1jump 640s, in order to improve the sensitivity of the shutter at the expense of a certain amount of image quality, but it makes sense for some photos to be taken.

(2) the use of large aperture and large aperture can increase the amount of light in the camera, which is why many night photographers use lenses such as big ternary lenses.

However, when using a large aperture, we need to pay attention to two points: first, the maximum aperture of the lens is often not its best performance aperture, that is to say, the picture quality may be a little worse under the maximum aperture.

Second, the increase of the aperture represents the reduction of the depth of field, so we need to pay attention to the focus problem.

(3) prolonging the exposure time and prolonging the exposure time is also a more reasonable way to deal with it in a weak light environment, and a lower sensitivity can also be used, but it is not suitable for all themes, such as long exposure is not suitable for shooting portraits. the slight movement of the character will make the photo burn out.

On the other hand, when shooting scenes such as traffic flow and water flow, it may have a strange effect, because long exposure can record the light track, making the photo look very dynamic.

3. When other details are filmed in low light, there are a few details worthy of our attention:

(1) in the low-light focusing environment, the camera may have the problem of focusing failure and inaccurate focusing, for which we can illuminate the main body to focus, or we can use manual focus, and check whether the focus is accurate through the screen.

(2) photometry in the weak light environment, there are few bright areas, the direct evaluation of photometry is prone to the problem of inaccurate photometry, we can choose local photometry or spot photometry according to the environmental conditions.

(3) the exposure is normal in a dark environment, the camera screen will appear brighter, and when we look at the photos, we will easily be "misled" into thinking that the exposure is normal, so it is recommended that we open the histogram to view it. To provide a reference for the exposure of photos.

This article comes from the official account of Wechat: play some Photography (ID:wakexiao), by AGER

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.