GigaPan EPIC Pro User Manual page 72

3. What is a simple method of determining the center
exposure, number of brackets, and the exposure value
separation?
Use an evaluative metering mode to determine the center
'Time/Exposure' setting and then simply choose three
brackets with a larger EV separation such as 1.7 EV or 2.0 EV.
4. What is an accurate method of determining the
number of brackets and the exposure value separation?
Determine the exposure for the brightest, average, and
darkest areas that you would like to be able to see details.
Use the following steps:
Change the metering mode to spot mode, if your camera
has that capability.
Point the camera lens to each area and depress the shutter
button half way to determine the shutter speed that will
center the reflective meter marker to zero. Take note of the
shutter speeds as you do this.
Determine the distance from the average exposure which
you use to set 'Time/ Exposure'. Do this by counting how
many shutter speeds settings your darkest and brightest
shutter speeds are away from your 'Time/Exposure' setting.
The default setting for shutter speeds in DSLR cameras is
1/3 stop. When you change the shutter speed three times