Sometime I was asked to use various ISO settings (up to 6400) for comparison. I tried to do that with the following series of shots of the beautiful Pratt Falls near Syracuse NY.

Around Syracuse NY-7 by vcheng552000, on Flickr
Camera Nikon D3X
Exposure 0.033 sec (1/30)
Aperture f/16.0
Focal Length 70 mm
ISO Speed 800

Around Syracuse NY-8 by vcheng552000, on Flickr
Camera Nikon D3X
Exposure 0.003 sec (1/320)
Aperture f/16.0
Focal Length 70 mm
ISO Speed 6400

Around Syracuse NY-9 by vcheng552000, on Flickr
Camera Nikon D3X
Exposure 0.4
Aperture f/16.0
Focal Length 38 mm
ISO Speed 50

Around Syracuse NY-10 by vcheng552000, on Flickr
Camera Nikon D3X
Exposure 0.1 sec (1/10)
Aperture f/16.0
Focal Length 35 mm
ISO Speed 200

Around Syracuse NY-13 by vcheng552000, on Flickr
Camera Nikon D3X
Exposure 0.013 sec (1/80)
Aperture f/4.5
Focal Length 24 mm
ISO Speed 100

Around Syracuse NY-14 by vcheng552000, on Flickr
Camera Nikon D3X
Exposure 0.2 sec (1/5)
Aperture f/16.0
Focal Length 32 mm
ISO Speed 50

Around Syracuse NY-15 by vcheng552000, on Flickr
Camera Nikon D3X
Exposure 0.017 sec (1/60)
Aperture f/4.0
Focal Length 44 mm
ISO Speed 100