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Digital cameras may use one of these types of mechanical shutters or they may use an electronic shutter, the type used in the cameras of smartphones. Electronic shutters either record data from the entire sensor at the same time (a global shutter) or record the data line by line across the sensor (a rolling shutter).
In movie cameras, a rotary shutter opens and closes in sync with the advancing of each frame of film. The duration is called the shutter speed or exposure time. These long exposure times often result in blurry images, as a single object is recorded in multiple places across a single image for the duration of the exposure. To prevent this, shorter exposure times can be used. Very short exposure times can capture fast-moving action and eliminate motion blur.
1 – Photography affords immortality
Take a gander at all the old photos your mother or grandma had around. I for one love seeing old pictures and envisioning what life probably been similar to “some time ago”. Furthermore, whenever I get to mising loved ones who have passed on, a photograph of them can bring back such delightful and appreciated recollections.