Because of the rapid development of mobile phone cameras and cameras, more and more people are now beginning to be exposed to photography and video shooting. In fact, whether it is photography or shooting short videos, the core parameters of the camera are three apertures, shutters and ISO. Today, let’s introduce to you what an aperture is, what role it plays in photography, and why girls like large apertures.
01What is an aperture?
Aperture, usually expressed by F or f, such as F1.2 and f/1.2. The aperture is a small hole composed of aperture blades, which exists inside the lens structure. By controlling the aperture blade, this small hole can be enlarged and reduced. The current aperture is mainly divided into three types, fixed aperture, cat-eye aperture and iris aperture. Our most common aperture now is the iris aperture.
The size of the aperture determines the amount of light entering the photosensitive element through the lens, and the size of the aperture can also determine the degree of blurring of the picture outside the subject in the photo.
Among the lenses currently on the market, the largest aperture configuration is F0.95. Brands including Nikon, Leica, Zhongyi Optics, Meyer and other brands have lenses of this specification.
The smaller the aperture value, the larger the aperture, the stronger the blur degree of the picture, such as F2.8, F1.8, F1.2, etc.; on the contrary, the larger the aperture value, the smaller the aperture, and the weaker the picture blur degree. , Such as F11, F13, F16, etc.
02How to identify the aperture size on the device
Many friends who are just getting started may not know what the maximum aperture of the lens is. In fact, the value of the maximum aperture is written On the lens, everyone can look directly.
Note that only the maximum aperture size supported by the lens itself will be marked on the lens, and it is divided into two types: constant aperture and non-constant aperture. Among them, the non-constant aperture lens is marked with the maximum aperture value range reached by different focal lengths, not the range of aperture supported by the lens as a whole.
The minimum aperture is generally not written on the lens. Ordinary lenses can generally support the minimum aperture of F16, and high-end lenses can support the minimum aperture of F22. This is a convention in the industry.
On the lens, the aperture is written as 1:1.2, 1:2.8, 1:3.5-5.6, so the actual maximum aperture of the lens is f/1.2, f/2.8, and f/3.5 to f/5.6. Now some newly launched lenses may directly write F2 and F4 to indicate the aperture value.
The role of 03 aperture 1: Control the blur effect
For ordinary photographers, the most direct function of the aperture is to change the blur effect of the picture, not to control the progress. The amount of light. In fact, a large aperture lens has a larger amount of light when used, so you can use a lower ISO to shoot in a dim environment to ensure a cleaner picture and less noise. But the degree of blur is more intuitive in the picture, so it is easier to remember.
The large aperture can bring more More blur effects, which is the main reason why many women like large apertures, because they can create a dreamy effect. What is a large aperture, in fact, the aperture value from F4 to F0.95 can be called a large aperture, or a super-large aperture. The small ternary lenses, large ternary lenses, and fixed-focus lenses that we use every day generally have all the characteristics.
Shoot with a small aperture, the picture is almost There will be no blurring effect. For a general lens, there is no blurring effect when the aperture of about F7.1-F11 is used, and the picture quality is relatively good. If the small aperture of F13-F22 is used, the sharpness of the picture may be reduced.
The role of 04 aperture 2: shooting special effects
In addition to the intuitive blur effect, the aperture has another feature, which is to control the special effects of the picture, such as light spots and stars The trajectory of the light and the object movement, the star light and the trajectory need to be matched with the operation technique of long exposure.
If you encounter some light sources in the foreground and background, such as colorful lights, street lights, etc., when you take a photo, you can form a light spot in the picture with a large aperture lens. This is also one of the favorite photos of women. The more the number of aperture blades of the lens, the closer the light spot is to a circle. You can also buy accessories that change the shape of the light spot on the e-commerce platform. You can change the round light spot into many shapes, which is very interesting.
When taking pictures, if you use a small aperture and there are point light sources in the picture, the starburst effect will be achieved. Whether the starburst effect is outstanding depends on the quality of the lens. The starburst effect of the high-end lens is excellent. Generally, when the shutter speed reaches 1-2 seconds, the starburst effect will begin to appear.
The effects of traffic, water, and clouds are also achieved by the small aperture of the lens with long exposure shooting, that is, the trajectory of the object’s movement is recorded. If you want to shoot the effects of water and flowing clouds during the day, it is recommended to match a suitable ND filter.
Seeing this, do you have a deeper understanding of the lens aperture? As the core parameter of the camera, sometimes learn to control the aperture, you can shoot more of the picture effects you want. Especially when shooting portraits, use the aperture to take various tall photos of the goddess, and maybe the goddess will become a girlfriend.
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Canon EOS R
[Dealer] Jingdong Mall
[Product price] 13699 yuan
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