Excuse me, what camera is on the picture? Please explain in detail.

I can't see the details clearly The brand of this camera should be "Lin Hafu" or "sinner" large format camera. This camera uses 4×5, 5×7 and 8× 10 inch film (non-film) frames. The lens and film cassette are installed on the insert plate for easy replacement. Because the leather cavity can change the perspective deformation and shift the axis, the design of the lens field of view is very expensive and the operation is very complicated.