I am currently doing an assignment on the f/16 RULE. So far, the info i have is:
The rule states that if working in full sun, set the to f/ 16 and the will be equal to the reciprocal of the . In practice, for example you are shooting at an of 100 in full sun; simply set the to f/ 16 and the to the reciprocal of the , which is 1/100 second.
You can of course use any combination of and as long as it converts back to f/ 16 at 1/100, such as f/8 at 1/400 or the like. This trick generally works quite well, but be mindful that if the scene is a bit shadowed then you must do a bit of interpretation and make some adjustments
I sort of understand it but the maths gets me a bit muddled up! Does anyone have an easier way of explaining it? Would that mean that f/4, would be 1600, taken at 1/1600 ?!!