If you are interested in experimenting with the different ISO speeds of your camera, Let me briefly explain that the higher ISO the faster the action you can catch.
This photograph of water falling has been taken in two different ISO Speeds. The first photograph is taken with the ISO speed set at 850. This setting catches the water falling and freezes the action.
For a smoother motion, I have taken the same photograph with the ISO Setting on 80. AS you can see the second photo has a blurred look to the water as it is falling.
The only precaution I see with using a high ISO Speed is that the lighting needs to be just right. With a faster ISO Speed, the shutter is faster too, so if the shutter closes too quickly in a poorly lit area, the result with be a photograph with a lot of noise. I will explain more about that another day.


