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

As one of the "three elements of exposure", aperture can not only affect the amount of light in the camera and the depth of field, but also affect some details.

For example, the "star" effect is as follows:

This effect is not post-production, nor is it formed by various filters, but when the light diffracts through the lens blade, when the aperture value is relatively small, the light source will show a radioactive star effect.

When the aperture value is about F11, the star awn effect will be more obvious, if the aperture value continues to shrink, to F18 or so, the star awn effect will be more obvious.

If we take a closer look at the stars shot in different shots, we will find that their effects are not the same, some with more stars and some with less stars.

The number of star awn is determined by the number of aperture leaves in the lens. The number of even-numbered leaves is equal to the number of leaves, and the number of odd leaves is twice the number of leaves.

If the number of leaves in the lens is 6, then the stars will also be 6; if the number of leaves is 7, then the stars will be 7, 2 and 14.

What should we pay attention to in the specific shooting?

In addition to the need to control the aperture, we also need to note that the stars always appear on the light source, especially on the brighter light sources, such as street lamps, the moon, etc., objects that cannot emit or reflect light generally do not show the star effect.

In addition, if you want the star effect to be more obvious, it is best to use long exposure, that is, a small aperture with a longer shutter time, so that the star effect will be more prominent and more textured.

It should also be noted that although the smaller the aperture, the more obvious the effect will be, many lenses do not perform well under the small aperture, and the picture quality may get worse, so the final effect may not be good. so there is no need to pursue the extreme small aperture in order to pursue more obvious stars, F14-18 can get very good stars.

Here, I would like to recommend several scenes suitable for shooting Xingmang:

(1) the street lamp is on the side of the road with heavy traffic, we can use a small aperture combined with long exposure to record the track, and at the same time, let the street lamp form a radial star effect, which can cooperate with the track for more visual impact. Remember to shoot in a safe location and don't affect other people's travel.

(2) the water surface will form a sparkling effect when the sun shines on the water surface, and the scattered light reflected on the water surface is also very suitable for the starlight effect, and the radial light will make the sparkling feeling of the water surface more obvious.

(3) concerts and music festivals are equipped with a lot of light sources on the stage such as concerts, so that the visual effect of the stage is very shocking. when shooting this kind of scene, we can also use a small aperture to make the light source show a starry effect. enhance the overall visual impact.

(4) the relatively large light sources such as the sun, the moon and the moon are also suitable for the starlight effect. In many promotional films of outdoor extreme sports, the sun will show a starlight effect, which makes the picture have a strong sense of impact. When we take outdoor photos, we can also use this effect, but it should be noted that if you want to make the starlight effect of the sun and moon look good, it is best to match the wide-angle or ultra-wide-angle lens, so that the effect will be better.

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

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