My notes on F stop, ISO....

exposure= amount of light

exposure is controlled by

1. shutter speed
2. aperture

ISO=sensor sensitivity

100= more light reqd.

3200= less ligh reqd.


lesser ISO
rich colors
less noise

Higher ISO
dull colors
more noise

ISO should be <400


F stop
1.0 1.4 2,0

F stop is also used to differentiate ISO or shutter sppedd.