Question by katanini: what is the difference between shutter speed and ISO?
and also, what is shutter speed shown in?
i want to know because i have a canon power shot and i want to know how to increase shutter speed to reduce motion blur without increasing ISO, which makes pictures noisy.
Answer by fhotoace
Shutter speeds are measured in from seconds to fractions of a second.
ISO is the measured sensitivity of the film or sensor
Blur is caused by camera movement.
Shooting at shutter speeds of at least 1/250th of a second can reduce noticalbe blur
Since the shutter speed is dependent upon the amount of light falling on the subject, adjusting the ISO is sometimes the only way to produce a high enough shutter speed in low light conditions
You have a choice. You can either have image blur or you can have image noise. Sure you can spend $ 5,000 on a Nikon D3 and get amazing low noise at high ISO shots, but you will have to learn how to use the fully adjustable camera to do that (and of course spend the big bucks)
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