Kamerablenden

Kamerablenden, also known as camera shutters, are essential components of photographic cameras that control the amount of light reaching the sensor or film. The shutter's primary function is to regulate the exposure time, which is the duration the light is allowed to enter the camera. This temporal control is critical for achieving a properly exposed image, preventing it from being too dark (underexposed) or too bright (overexposed).

There are generally two main types of camera shutters: focal-plane shutters and leaf shutters. Focal-plane shutters are typically located just in front of the image sensor or film plane. They consist of a mechanism, often made of curtains, that moves across the sensor, revealing it for a specific period. Leaf shutters, on the other hand, are usually found within the lens assembly itself. They comprise a series of overlapping blades that open and close rapidly to allow light to pass through.

The speed at which a shutter opens and closes is known as the shutter speed. Shutter speeds are measured in fractions of a second, with faster speeds (e.g., 1/1000 sec) freezing motion and slower speeds (e.g., 1/30 sec) allowing for intentional motion blur or capturing more light in dim conditions. The choice of shutter speed, along with aperture and ISO, forms the "exposure triangle," a fundamental concept in photography. Understanding how the kamerablende works is crucial for photographers to creatively control their images.