What does the opening angle of the film camera fender mean?

The rotation speed of the camera is adjustable, from frame by frame to 2 frames/second to 150 frames/second or even higher; but 24 frames/second is the number of shooting and screening frames that best suits the visual habits of the human eye. That’s all.

The shutter of a movie camera is different from the curtain shutter and mirror shutter of the camera we are familiar with

The exposure of the movie camera is completed by the rotation of the leaf plate

"180 degree shutter" refers to the angle between the openings of the fenders

"Speed ??50/1 second" refers to the rotation speed of the fenders at 50 revolutions per second

< p>The film is exposed when the fender is open

Shutter angle (fender opening angle) and shutter speed are two concepts that have only indirect effects on each other and have no direct relationship; increasing the fender angle will downgrade the shutter speed. Shaking and shaking will help create the so-called sense of picture lag.

Film photography is generally 1/48 second, which is 24 frames/second; shooting at a speed lower than 24 frames/second and then showing it at a speed of 24 frames/second is a fast-action lens; vice versa Slow motion picture.