The Reality
Now before moving on I should clarify the previous paragraphs as correct flash theory, because it is theory and it’s based on manual flash. The reality is when you are in TTL automatic flash; the flash will adjust its light output automatically to any changes in f-stop you have made. So if you move the f-stop from f8 to f11, the flash will automatically double flash output for a correct exposure at f11. If you adjust from f8 to f5.6, the flash will reduce by half the amount of output for a proper exposure. It’s this function that makes flash so easy to use: TTL does all the work.The content you are trying to access is only available to members. Sorry.
