Thursday 12 October 2017

Unit 30- Camera & Lighting- Shutter speed




                                                                    Shutter Speed





Shutter speed is also referred to as a cameras exposure time, it is the duration of time the cameras light sensor is exposed to light. if the camera's shutter speed is relatively high, it can help to freeze action completely, if the shutter speed is low that it creates motion blur, in which a moving object has blurred edges along side the direction it is moving in. This is different to shutter speed in photography however,For a start, with photography, you’re relying on a mechanical shutter. But when you’re recording video the noise of the shutter would be picked up during video recording. So instead, the shutter opens at the start and then an electronic shutter simulates the function of the mechanical shutter whilst you’re filming.
The frame rate the cinematographer choses to use during a shoot also effects the use of shutter speed, typically most scenes shot within a film have a frame rate of 24 frames per second as this gives the shot a constant smooth run without any drops in frames per second, whilst running on 24 frames per second the shutter speed should average around 1/50, as a general rule of thumb, the frame rate should be around half the frame rate, if the camera runs at 60 frame per second the shutter speed should be around 1/30. 




1/300, whilst motion blur can still be seen, the frame is relatively smooth, with little motion blur being visible around the subject 


1/30, with a slower shutter speed, the motion blur can clearly be seen around the subjects hand and phone, up closer inspection motion blur can also be seen around the subjects face



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