The seagull 4A 4B problem?

Seagull 4B- 1 is an improved version of Seagull 4B. 4B- 1 A flash socket is added on the basis of 4B, and the viewing screen adopts plastic brightness enhancement screen.

4B- 1 Early products were just ordinary plastic brightness enhancement screens without cracks. The later product is split screen. Above. It's a waste of time. The cameras of the 1960s are not as good as those of today in function and performance. I have bought a second-hand seagull camera before, and the film imaging is no problem. The RB67 focus is exhausted. The viewfinder lens is not very transparent, and the focus is a frosted screen, so the latitude and pixels are not good because it is 120 film, which is not the credit of the camera. I suggest you take a look at Mamiya's camera.