Traditional Culture Encyclopedia - Photography and portraiture - Decide on three elements when taking pictures. Decide on that first.
Decide on three elements when taking pictures. Decide on that first.
When taking a photo, decide the three elements first.
When taking a photo, decide the three elements first. Whether taking a photo with a mobile phone or a video camera, we need to know some tricks. Such skills can help us get started quickly. Let's share the following three elements when taking a photo. When taking a photo, we must first determine the 1
, that is, aperture, shutter and exposure (ISO). These three elements are the most basic factors that determine the brightness of our photos, that is, the exposure.
from the beginning, the first is the aperture.
what is an aperture? I believe everyone has seen the picture below or something similar.
yes, this is the aperture. There is a difference between a large aperture and a small aperture. You can see it by looking at the picture.
so how does the aperture size affect the photo? When you look at the pictures, you can find that the large aperture has more light, while the small aperture has less light.
in other words, when you increase the aperture, the photos will be brighter; when you decrease the aperture, the photos will be darker.
However, the aperture is not only as simple as brightening and darkening, but also my sister's favorite-that is blurring!
The larger the aperture, the better the blur, so when you want to ask a girl out, remember to buy a lens with a large aperture, hehe hehe.
tip: the aperture is represented by f, and the smaller the value of f, the larger the aperture. For example, if F1.8 is larger than F2.8, F2.8 is a smaller aperture than the former.
second, let's talk about the shutter speed, that is, the time of "click" ... well, it's familiar. This shutter must have been said before! If you want to read it, you can look through the previous articles.
Generally speaking, the faster the shutter speed is, the darker the photo will be, and the slower the shutter speed will be, the brighter it will be. Think about it, the shutter will take less light in a few hundredths of a second than in a few tens of seconds. If there is less light, the photos will definitely be dark.
At the same time, like the aperture, the shutter also has its unique function-high-speed photography and slow-door photography
You must have seen the following similar pictures:
This photo records the action of a high-speed moving object and freezes it, which is the shooting effect that the shutter completed in a few thousandths of a second.
you must have seen the same slow door, that is, the slow shutter.
This is the effect of shooting when the shutter speed reaches several seconds or even more than ten seconds. Isn't it cool?
finally, let's talk about the exposure, that is, ISO, which, in layman's terms, is the sensitivity of photosensitive elements to light.
the higher the sensitivity, the brighter the photo and the higher the ISO value. Usually it is the lowest 1 in sunlight (except for a few machines that go against the sky like Nikon D81). In the shadow, we need to play high sensitivity. For example, places like concert halls often hit more than 4,, when Canon 5D3 was used.
so what are the characteristics of sensitivity? That's the effect of image quality.
The higher the sensitivity, the worse the image quality, which is its characteristic. When the sensitivity reaches a certain level, there will be obvious noise, just like this:
This is one of the things that photographers hate most. There is no way to improve the sensitivity in some dark situations, so you must accept the existence of noise. Unless ... unless you use high-end cameras, such as Canon 1DX and Nikon D5, gnome male-"... that's why you use 5D3 when shooting in concert halls and other occasions. For example, our mobile phone camera is a lot of noise when shooting at night.
Aperture, shutter and ISO all affect the brightness of photos. For example, if you want a large aperture when taking a portrait and the shutter can't be slower, you can adjust the sensitivity. Everyone wants to shoot the splash, so the shutter speed should be kept at a high speed, and everyone should adjust the shutter and aperture. It's the same thing. When taking a picture, determine three elements. First, determine that 2
The three elements of photography are shutter, aperture and sensitivity (iso).
shutter is the exposure time. To put it simply, it is to control the speed of taking photos. The longer you grab a photo, the more light you get, the brighter the photo will be, and vice versa. You can see the camera shutter value, which usually shows 1/xxx, which means how many fractions of a second it takes to take a photo.
during the day, the shutter value can be raised a little (the value mentioned here is the denominator value), which is convenient for snapshot, and it can be relatively lowered at night. For beginners, it is not recommended that the shutter value be lower than 5.
Aperture is a numerical value determined by the lens of a camera. It is like a window. If the aperture is large, it will get more light, while if it is small, it will get less light. However, its numerical value is the opposite. If the numerical value is large, it will get less light, and if the numerical value is small, it will get more light. When you adjust the aperture value, you can look at your lens and obviously feel the change of aperture size.
In addition to controlling the light, the aperture has a more important function, which is to control the depth of field, that is, the background of the photos you take is blurred. The smaller the aperture value, the more blurred the background is, and the larger the aperture value, the clearer the background is.
So we usually use a large aperture (small aperture value) for close-up shots and a small aperture (large aperture value) for panoramic shots. One thing to note here is that the photos taken with large aperture are easy to deform, so it must be controlled well when using.
the sensitivity (iso) is a performance value of the camera's sensitivity to light. The larger the number, the more sensitive the camera is to light, and the more light the photo has. The smaller the number, the less sensitive the camera is to light, and the darker the photo light is. When adjusting the sensitivity, be careful not to adjust it too high, so that the photos are noisy and the photos taken are unclear. What is the specific adjustment value? Depending on the camera performance, it generally ranges from 1 to 8. When taking pictures, determine the three elements first. 1. Aperture
Aperture is the size of the aperture on the camera lens. The aperture is represented by f, and the' value after f is the aperture value.
generally, the aperture values are: F/1, F/1.4, F/2, F/2.8, F/4, F/5.6, F/8, F/11, F/16, F/22, F/32, and the aperture values of each step are 1.4 times (.
generally speaking, the aperture value is less than F/2.8, including F/2.8. We classify them as large apertures, such as F/1, F/1.4, F/2, and F/2.8. If the aperture value is greater than F/8, including F/8, we classify them as small apertures, such as F/8 and f. But we should pay attention here that the larger the aperture, the smaller the value after f, in other words, the smaller the number after f, the larger the aperture.
we should remember: "the aperture value after f is inversely proportional to the exposure, and the aperture is directly proportional to the exposure." That is to say, the greater the value after f, the smaller the exposure, because a large value of f means a small aperture, a small aperture, less light passing through, and less exposure per unit time.
2. Shutter
Shutter is actually the time required for exposure.
the faster the shutter speed, the shorter the exposure time and the less exposure per unit time. The slower the shutter, the longer the exposure time, and the greater the exposure per unit time.
the shutter value is expressed in seconds or fractions of seconds, such as 1 second, 2 seconds, 1/3th second, 1/6th second, 1/125th second, etc.
generally speaking, a shutter that is slower than 1/6th of a second belongs to a slow shutter, while a shutter that is faster than 1/25th of a second belongs to a high shutter.
3. Sensitivity ISO
Sensitivity refers to the sensitivity of the camera photosensitive element to light. By adjusting the sensitivity value, the image in low light environment can show brighter effect. ISO values are usually divided into different values, such as 5, 1, 2, 4, 8, 16, 32, 64, 128 and so on. Basically, every time you increase a gear, the ISO value will increase by a multiple of 2.
The higher the sensitivity value, the brighter the scene in low light environment, and the lower the sensitivity value, the less it can improve the brightness of the scene. However, it should be noted that the higher sensitivity, although it can increase the brightness and improve the shutter speed, comes at the expense of the fineness of image quality. Therefore, as long as the light is acceptable and the shutter speed can be guaranteed, the sensitivity should be adjusted as low as possible to ensure the image quality.
4. Exposure relationship among aperture, shutter and ISO
When we adjust the aperture size, shutter speed and sensitivity of the camera, the photos can be lightened or darkened, that is, the adjustment of exposure.
① If the aperture size is fixed, we can increase or decrease the shutter speed or ISO to brighten or darken the photo
② If the shutter size is fixed, we can increase or decrease the aperture size or ISO to brighten or darken the photo
③ If the ISO size is fixed, we can increase or decrease the aperture size or shutter speed to brighten or darken the photo.
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