Main structural components and functions of large format camera

In fact, looking at the large format camera on the tall one belongs to the most primitive camera structure. Large format is generally divided into 4X5 inch model, 5X7 inch model, 8X 10 inch model, and less common 12×20, 16×20, 20×24 inch model, etc. These latter models are also called super format models.

In a word, their structures are almost the same, which are nothing more than the body (just a box), the viewing screen (frosted glass), the lens plate (fixed lens), the lens, the guide rail (linking the body and the lens plate, which can move the focus), and the folding leather cavity (linking the lens plate and the body, which plays the role of shading). As for the aperture and shutter I am familiar with, they are all on the lens. All lenses are inter-mirror shutter structures. The smallest machine is 4X5. Hehe, you want him to be the focal plane shutter. How much is the charge? That volume? That vibration? I dare not think about it.

Large format camera structure

When shooting, first open the lens aperture and shutter, use the wool glass bottle on the back of the camera to find and focus, then close the shutter, reset the shutter speed and aperture value, replace the film on the back and expose it.

disadvantaged

1, especially bulky, is not suitable for snapshots and news records, but only for posing and landscape photography. It is troublesome to use, and the steps are cumbersome. Every step depends on your own adjustment settings. The picture seen by the viewfinder is upside down, and the focus is slow and painful. It is difficult to see the framing picture clearly under outdoor strong light, so it is necessary to cover the shading cloth for framing and focusing.

2. The shooting cost and associated investment are extremely high, and the film is expensive, expensive and time-consuming. Because the machine is heavy, you need to buy a professional and stable shelf. Because of the complicated lighting, we need to buy another high-performance exposure meter. Some enthusiasts will also build their own darkrooms and buy washing equipment.

superiority

1, it's very refreshing to recite, suitable for x, hehe.

2. The film is really big, and the picture quality is really good and substantial.

3. Moving-axis shooting architecture can perfectly control the viewing angle, and it is easy to shoot an ideal full-focus Quan Jingshen (not because of the small aperture and short focal length) according to the sand theorem.