It all depends on how far out (+/-) your camera metering is.
Choose a fine sunny day, and a scene with all 5 stops of dynamic range.
Camera on tripod,matrix/evaluative metering,A/Av shooting mode.
Using Exposure compensation, make 7 exposures From +1 to -1
Enlarge to 100% (actual pixels) in photoshop-select the one that gives most detail in both shadows and highlights,without highlight being blown out.
This one is what you set your camera to.
Now your camera is calibrated for optimum performance
Set auto bracketing to 2/3 ev increments
One of your 3 shots will always be within 1/3 of an ev stop.
regards, Ken
|