Electronic Shutter vs Mechanical Shutter in Digital Cameras By: Vipin Goje in Hindi 4K

Electronic shutter and a mechanical shutter?
In a modern DSLR or mirrorless camera, the mechanical shutter has two curtains or blinds, each made of several blades, that open to let light reach the sensor and then close at the end of the specified exposure time. It uses two curtains so that the exposure is consistent across the whole sensor. If there was only one, it would be like raising and then lowering a blind on your window - the first part of the sensor to be exposed would also be the last, and the exposure would be uneven. Instead, the process starts with the front curtain closed and the rear curtain open. The front curtain opens, starting the exposure, and after the set exposure time the rear curtain then closes to end the exposure. Both curtains move in the same direction (for example, top to bottom), so all parts of the sensor are exposed for the same length of time. Using two curtains also means that the exposure time is determined by the time gap between the first opening and the second closing, which can be very precisely controlled.
Unlike a mechanical shutter, an electronic shutter doesn't have any moving parts. Instead, the image information is gathered from the sensor over the specified exposure time, which can be much shorter than any mechanism could support. The catch, however, is that for technical reasons such as electronic bandwidth, the sensor data cannot be saved all at once but must be read off sequentially, one line (or several lines) of pixels at a time, in much like the way a scanner head moves down the bed of a flatbed scanner. As a result, the "shutter speed" (that is, exposure time) can be much faster but the readout speed can introduce limitations and potential problems.Follow The Focal:
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Vipin Goje - Director/DOP based in Mumbai and shooting over last 18 years in Photography & cinematography with a strong visual style and unique eye, who strives to put story at the heart of his photography and cinematography, Art and advertisement, whether he working in fiction or documentary, short films or television ads.