How did you take an 8-second photo shutter in broad daylight?

1, streamer shutter of mobile phone-Silk Running Water

Streamer shutter shoots a lot of the same pictures in a period of time through the principle of superposition (also called superposition), and then identifies and retains the static background pictures according to a certain algorithm, extracts different parts of each picture to synthesize dynamic effects, and presents dynamic blur, or the final picture is like a light track!

In four modes, the "Silk Flow" algorithm can shutter for 8 seconds during the day without overexposure.

▲ Silk flowing water shoots flowing water, atomizing the water surface, creating a quiet poetry of falling leaves and flowing water.

In fact, this model can also be applied to many scenes, such as flowing crowds and clouds.

▲ Silk water shows the effect of cloud flow very well, and the picture is full of motion.

Most importantly, the whole shooting process is completed automatically, and there is no need to adjust the parameters. You only need to control the shutter (shooting time), and the picture effect changes in real time on the screen. When you are satisfied with the effect, press the shutter to stop shooting. Please refer to the slow door of mobile phone | "Streamer shutter" Huawei mobile phone, which is easy to shoot "cool feeling" when used.

2. SLR reducing mirror

Take running water as an example. First of all, we must find a dark environment and extend the shutter with small aperture and low sensitivity. The second is to use nd filter to avoid overexposure. Neodymium mirrors are similar to sunglasses. When used, it can well weaken the light in the picture and avoid overexposure.

▲ Comparison of using effect of Nd mirror.

According to the classification of dimming effect, it is divided into ND2, ND4, ND8 and ND 10, which are underexposure 1, underexposure 2, underexposure 3 and underexposure 10 respectively. Usually in daytime, using ND 1000 and shooting the shutter within 20 seconds can avoid overexposure.

▲ Use ND 1000 to shoot the effect.

The following is the correct usage of ND mirror: first, you need to determine the exposure parameters without filter.

It is suggested to use the aperture priority exposure mode, control the depth of field by adjusting the aperture, and then shoot to see if the brightness of the picture is appropriate. If not, adjust the exposure compensation appropriately. Then write down this set of exposure parameters, adjust the exposure mode to m, and input the same aperture, shutter speed and ISO (it is recommended to manually adjust the ISO value).

Secondly, after precise focusing, it is adjusted to manual focusing. In fact, when the exposure parameters without filter were determined in the previous step and shooting was made, the focusing should have been completed. The reason for this is that some friends may use manual focusing, so they didn't pay attention to the focusing step when shooting, which led to the installation of ND lens before they remembered focusing. At this time, they have to remove the filter and put it back, which is very troublesome. In addition, it is also very important to adjust to the manual focusing step, because when shooting after mounting the ND mirror, pressing the shutter will inevitably make the camera have a focusing process (except the back key focusing), which makes it impossible to press the shutter or shoot a paste.

▲ Three commonly used ND reducers

It should be noted that try not to use filter superposition. For example, the superposition of two Nds, or the superposition of ND, CPL and gradient, even the top filter brands will still affect the image quality and color. The superposition of filters is objectively equivalent to increasing the lens thickness, which will not only increase the loss of image quality, but also greatly increase the probability of color cast and glare.

3. Stacking method

When shooting, the stack can show the effect of slow door without using filters, which reduces the burden of many photographers to buy filters. Its principle is the process of superimposing multiple pictures and processing layers to synthesize a new picture. Simply put, multiple pictures are superimposed to form a new picture, which has the functions of improving image quality, removing noise and showing slow door effect. Of course, it also increases the workload in the later period, with gains and losses. You can refer to the "superposition" often mentioned in previous landscape photography. Are you clear? Teach you to play stack photography

▲ superposition method to shoot clouds.

▲ The combination of "car tracks and clouds" makes the picture more spectacular and more shocking.

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