Shutter button
Encyclopedia
In photography
the shutter-release button (sometimes just shutter release or shutter button) is a button
found on many cameras, used to take a picture. When pressed, the shutter
of the camera is "released", so that it opens to capture a picture, and then closes, allowing an exposure time as determined by the shutter speed
setting (which may be automatic). Some cameras also utilize an electronic shutter, as opposed to a mechanical shutter.
The shutter-release button is one of the most basic features of a handheld camera. Camera phone
s that lack a physical button for this purpose use a virtual button on the virtual keyboard
.
The term "release" comes from old mechanical shutters that were "cocked" or "tensioned" by one lever, and then "released" by another. In modern-day photography, this notion is less meaningful, so is gradually falling from use.
Photography
Photography is the art, science and practice of creating durable images by recording light or other electromagnetic radiation, either electronically by means of an image sensor or chemically by means of a light-sensitive material such as photographic film...
the shutter-release button (sometimes just shutter release or shutter button) is a button
Button
In modern clothing and fashion design, a button is a small fastener, most commonly made of plastic, but also frequently of seashell, which secures two pieces of fabric together. In archaeology, a button can be a significant artifact. In the applied arts and in craft, a button can be an example of...
found on many cameras, used to take a picture. When pressed, the shutter
Shutter (photography)
In photography, a shutter is a device that allows light to pass for a determined period of time, for the purpose of exposing photographic film or a light-sensitive electronic sensor to light to capture a permanent image of a scene...
of the camera is "released", so that it opens to capture a picture, and then closes, allowing an exposure time as determined by the shutter speed
Shutter speed
In photography, shutter speed is a common term used to discuss exposure time, the effective length of time a camera's shutter is open....
setting (which may be automatic). Some cameras also utilize an electronic shutter, as opposed to a mechanical shutter.
The shutter-release button is one of the most basic features of a handheld camera. Camera phone
Camera phone
A camera phone is a mobile phone which is able to capture still photographs . Since early in the 21st century the majority of mobile phones in use are camera phones....
s that lack a physical button for this purpose use a virtual button on the virtual keyboard
Virtual keyboard
A virtual keyboard is a software component that allows a user to enter characters. A virtual keyboard can usually be operated with multiple input devices, which may include a touchscreen, an actual keyboard and a computer mouse.- Types :...
.
The term "release" comes from old mechanical shutters that were "cocked" or "tensioned" by one lever, and then "released" by another. In modern-day photography, this notion is less meaningful, so is gradually falling from use.