B. CAMERA SHUTTER – is similar to a door. It is closed, part open, fully open, part closed, and again closed. During this cycle, a specific amount of light is permitted to reach the film.
There are two (2) basic types of shutters used in cameras:
1 .Leaf shutters are located near or within the lens of a camera
2. Focal plane shutters are located as close to the film as possible but between the lens and the film.
The Leaf Shutter is made of three (3) or more very thin blades. The material used to make the blades is either spring steel, plastic, or titanium. A series of "clocklike" precision parts make it possible for the blades to open and close. Leaf shutters are used on nearly all viewfinder cameras because they cost less than focal-plane shutters. Some medium format cameras have leaf shutters built into the interchangeable lenses. Leaf shutters also are used in twin-lens reflex and view cameras.
The Focal – Plane Shutter are used in nearly all 35-mm, single lens reflex cameras. These shutters include two (2) rubberized fabric or metal curtains that are mounted as close to the film as possible. Focal-plane shutters are designed to operate either in a vertical or horizontal direction across the film frame.
Two curtains move or run across the film frame, one head of the other. When the shutter release is squeezed, the lead curtain travels in front of the film and is then followed shortly thereafter by the trailing curtain.
There are two (2) basic types of shutters used in cameras:
1 .Leaf shutters are located near or within the lens of a camera
2. Focal plane shutters are located as close to the film as possible but between the lens and the film.
The Leaf Shutter is made of three (3) or more very thin blades. The material used to make the blades is either spring steel, plastic, or titanium. A series of "clocklike" precision parts make it possible for the blades to open and close. Leaf shutters are used on nearly all viewfinder cameras because they cost less than focal-plane shutters. Some medium format cameras have leaf shutters built into the interchangeable lenses. Leaf shutters also are used in twin-lens reflex and view cameras.
The Focal – Plane Shutter are used in nearly all 35-mm, single lens reflex cameras. These shutters include two (2) rubberized fabric or metal curtains that are mounted as close to the film as possible. Focal-plane shutters are designed to operate either in a vertical or horizontal direction across the film frame.
Two curtains move or run across the film frame, one head of the other. When the shutter release is squeezed, the lead curtain travels in front of the film and is then followed shortly thereafter by the trailing curtain.
No comments:
Post a Comment