I saw the long lens used by photographers at the auto show. What are the advantages of telephoto and why? Why don't they set the Jiao Da aperture lens?

1, composition requirements

A long lens can better shoot distant objects (auto shows are usually crowded and it is impossible to shoot at close range. Even if there is a reporter's day, the cars are usually on the booth, and there is still a certain distance. ) and a long lens can show close-ups, such as a part of a vehicle or a close-up of a car model.

Short shots will take more scenes as shots, and when there are many people, the picture will be too messy and it is not convenient to highlight the theme. Journalists' Day will also be because of the background (the background of the auto show is rarely a piece of white cloth, even if it is, it is just a wall, so you can't avoid the background if you change the shooting angle). Of course, the unique sense of space expansion of the short lens is very visual tension, so sometimes you can see the works of shooting the front of the car with a super wide-angle lens.

2. Depth of field requirements

A long lens can get a shorter depth of field under the same aperture, which helps to avoid messy background and highlight the theme.

Next, why not focus?

On the open day, there are many people, and the best shooting position is the first row. But the distance between the first row and the car model, as well as the size of the car, all affect the angle of view required for composition. It is not convenient to adjust the viewing angle by focusing, but only by changing the distance of the subject, which is impossible when there are many people.

There is no artificial influence on the press festival, but there are still other exhibition hall layouts, exhibition boards, booths, fences and so on. Using a more flexible zoom lens will not stretch when creating.

As for the large aperture, in fact, photographers have the complex of large aperture, so equipment manufacturers also spare no effort. Otherwise, there wouldn't be a monster like 50/0.95. However, due to the cost and structure, the zoom lens with the largest aperture is 2.8 at present. For a fixed-focus lens, this aperture is simply insignificant (except for a super wide-angle super telephoto lens, which seems to have no zoom lens). . . )。 But in terms of practical use, 2.8 is really big, at least enough.

But all the above were taken outside the auto show.

If you are shooting an advertisement for a car, and you can be in the studio, the quality of the picture is a priority, so you must naturally focus (there is no dog's head for focusing).