In photography, shutter speed is a common term used to discuss exposure time, the effective length of time a camera's shutter is open.[1] The total exposure is proportional to this exposure time, or duration of light reaching the film or image sensor.
Multiple combinations of shutter speed and aperture can give the same exposure: halving the shutter speed doubles the exposure (1 EV more), while doubling the aperture size (halving the focal number) increases the exposure area by a factor of 4 (2 EV). For this reason, standard apertures differ by √2, or about 1.4. Thus an exposure with a shutter speed of 1/250 s and f/8 is the same as with 1/500 s and f/5.6, or 1/125 s and f/11.
In addition to its effect on exposure, the shutter speed changes the way movement appears in the picture. Very short shutter speeds can be used to freeze fast-moving subjects, for example at sporting events. Very long shutter speeds are used to intentionally blur a moving subject for artistic effect.[2] Short exposure times are sometimes called "fast", and long exposure times "slow".
Richard Avedon was a very famous American Fashion photographer. He was able to get a lot of emotion into one picture without many props, backgrounds, or distractions. He was famous for having models pose on plain backgrounds. This is his famous picture of Marilyn Monroe.
Nessun commento:
Posta un commento