Seagull 海鸥 4B-1

The Seagull 4B-1 is a representative example of the numerous medium format (120) twin-lens reflex (TLR) cameras produced by the Seagull Camera factory in China, primarily serving the domestic and entry-level export markets during the mid-to-late 20th century. As a budget-conscious interpretation of the classic Rolleiflex design, it offers a straightforward shooting experience with a coupled viewfinder for critical focusing and a waist-level finder for composing images. Featuring a simple B (Bulb) and 1"—1/300" shutter speed range and a fixed shutter synchronized flash sync, the 4B-1 prioritizes accessibility over advanced features or precision engineering. Its construction, while functional, utilized pressed metal components and basic materials, resulting in a durable but somewhat utilitarian build typical of its era and intended audience. The camera embodies an era of accessible medium format photography for amateurs and hobbyists seeking an affordable entry point into the larger format without the complexity of interchangeable lens systems.