What is a fixed lens?

Question 1: What is a fixed lens? Is it a photographic lens?

If so, the so-called fixed head should be a designated focal head, which means that the focal length of the lens is immutable. The standard focal length is a number, such as 50. The focal length of the zoom head is a range, such as 70-200

Question 2: Advantages and Disadvantages of Fixed Shot Fixed Shot (Fixed Shot) refers to the camera position and lens optical axis during the shooting of a shot. and focal length are fixed, while the subject can be static or dynamic. Fixed lens is a static modeling method. Its core is that the frame to which the picture is attached does not move. However, it is not completely equivalent to fine art works and photography. The characters in the picture can move in and out of the picture at will, and the light and shadow in the same picture can also change. Advantages: 1. Fixed lenses are good for expressing static environments. When editing event news such as venues, celebrations, accidents, etc., large-scale fixed pictures such as long shots and panoramic views are often used to explain the location and environment of the event. 2. A fixed lens can more objectively record and reflect the movement speed and rhythm changes of the subject. In sports shots, because the camera follows the moving subject and the background flashes by, it is difficult for the audience to compare it with a certain reference object. Therefore, they lack a more accurate understanding of the subject's movement speed and rhythm changes. For example, during the 50th anniversary celebrations of the Republic of China, when introducing my country's advanced fighter jets, if a moving lens is used to follow the shooting, the aircraft will appear relatively static, moving at a constant speed with the frame of the picture, as if it is suspended in the sky. The same as in; if you choose a fixed shot with a red flag and buildings in the foreground of a large scene, the audience can see the trajectory of the fighter jet flying in the fixed frame, and can clearly feel the speed of the fighter jet. 3. Due to its stable viewpoint and static frame, the fixed lens can easily induce a psychological response that tends to be "quiet" through static modeling, giving the audience a feeling of depth, solemnity, tranquility, and solemnity. Therefore, when editing shots, we can use the difference in psychological feelings between fixed shots and moving shots to serve the content and theme. For example, when editing a piece of news about a school library, in order to express its unique tranquility, you can use multiple fixed images to record and reflect it, such as a large scene of many students studying at their desks, a close-up of the faces of many students concentrating on meditation, etc. . This formal treatment is consistent with the content and the atmosphere of the scene. Disadvantages: 1. The viewpoint is single and the viewing area is limited by the picture frame. 2. The styling elements within the fixed picture frame are relatively concentrated and stable, so it is difficult to achieve changes in composition with one shot. 3. It is difficult to perform well on subjects with large activity trajectories and movement ranges. Such as figure skating, racing, etc. 4. Using too many fixed shots in editing can easily create a sense of fragmentation. It is not as good as moving shots, which can record and reproduce the original appearance of life more completely and truly.

Question 3: What are the key points of fixed lens? Simple answer: Fixed lens does not seem to be a professional term and is prone to ambiguity.

The first understanding is the so-called "Focus free" lens. For example, some mobile phones use "fixed lenses" that cannot focus automatically or manually. If you understand it correctly, for this type of lens, the focal length should be as short as possible so that the depth of field is large enough and the photos taken from both distance and near are relatively clear.

The second understanding is to fix the lens on the machine. To achieve clear images everywhere in the picture, the optical axis of the lens must be at the center of the sensor and perpendicular to the plane of the sensor.

Question 4: Introduction to Fixed Shot Fixed Shot (Fixed Shot) means that during the shooting of a shot, the camera position, lens optical axis and focal length are fixed, while the subject can be static , it can also be dynamic. Fixed lens is a static modeling method. Its core is that the frame to which the picture is attached does not move. However, it is not completely equivalent to fine art works and photography. The characters in the picture can move in and out of the picture at will, and the light and shadow in the same picture can also change.

Question 5: A fixed lens means that the camera position and focal length remain unchanged during filming.

Question 6: What are the characteristics of a fixed lens? Is it a fixed focus? Compared with the zoom head, the fixed focus head has faster focusing speed, stable imaging, higher focus clarity, more delicate color reproduction, etc., which are better than the zoom head.

You know the shortcomings but don’t talk about them.

Question 7: What is a fixed focal length lens? It is a lens with a fixed focal length

Question 8: What is a full-focus fixed lens? I'm not very clear, but I understand that it's like a microscope lens that can't zoom or focus. To see clearly, bring the object closer or further to suit the focus of the lens. It's a convex lens.

Question 9: What shooting situations are fixed lenses suitable for? Suitable for situations where you don’t mind using your legs instead of the zoom function, haha ??

Question 10: What is the difference between a telescopic lens and a fixed lens for a digital camera? The above two guys are not comprehensive.

The telescopic valve of the card machine is fixed:

Periscope lenses, such as Sony's T series, can zoom without visible changes on the surface. The lenses of most card cameras are retractable, which is not directly related to whether they can zoom; it’s just that most zoom lenses can be retracted.

SLR lenses are not necessarily the same.

In low-end lenses, most zoom heads are retractable. In high-end lenses, internal zoom is used (that is, the outer length does not change. ) There are many ways, such as Xiaobai, Xiaobai and so on. The advantage of this is that it avoids easy dust collection like a blower.

Just look at Sony’s T series and internal zoom lenses.