Traditional Culture Encyclopedia - Photography major - What film is used for seagull 203?

What film is used for seagull 203?

Seagull 203 camera uses 120 film, which is generally available in photographic equipment city and large photo color expansion stores.

Seagull 203 camera is a folding camera using 120 film. There is a movable cover in the camera for taking 6x6 (12) and 6x4.5 (16) images for selection. The focal length of the lens is 75 mm, the relative aperture is 1:3.5, and the aperture values are F3.5, 4, 5.6, 8,1,16,22. There are seven apertures, and the aperture error is less than 10%. The photographic lens is three-piece, three-group Kirk type, with high resolution in the center image field and slightly poor edge. The outer lens is coated with antireflection film, and the lens reaches the national second-class standard. When the aperture is fully opened, the resolution of the central image field reaches 2 1 line /mm, and the edge is 9 lines/mm. When the aperture is reduced to F8-F 16, the resolution is obviously improved, and the resolution of the central image field reaches 30 lines. This machine is the central shutter between mirrors, which has little vibration and can synchronize the shutter all the time. Shutter time is divided into b, L- 1/300 seconds, a total of 10 blocks. Own machinery

Self-timer, delay 8- 12 seconds to start the shutter; Head-up optical framing, double-shadow overlapping linkage ranging, recent shooting distance 1 m; There is no automatic parallax elimination function; Pull-type film winding, which can be repeated if the film winding is not in place once, with anti-remake device; The red window on the back cover has a flash socket, but no hot shoes, and an X-sync flash socket. When taking flash photography, the flash and the X jack must be connected by a synchronous line; The fuselage is equipped with manual exposure reference disk, with EV value of 0- 17, shutter 1- 1/300 seconds, aperture F22-3.5, and seven film sensitivities (DIN: 12, 15,/kloc- After opening, it is140 x104 x101mm, weighing 690g g.

The manufacturer didn't explain the division of seagull 203 version, but I imagined it for convenience, and I hope the experts will correct me; Seagull 203 differs greatly due to different production years. For example, the early coat was made of cowhide, which was hard, strong and beautiful, and later it was changed into artificial leather; Some covers are engraved with "Made in China and Made in China", while others are not. Film friends can pay attention to the distinction when collecting.