Manual Flash Calculator
What is it?
Guide number
ISO
Low aperture
f/1
f/1.4
f/2
f/2.8
f/4
f/5.6
f/8
f/11
f/16
f/22
High aperture
f/1
f/1.4
f/2
f/2.8
f/4
f/5.6
f/8
f/11
f/16
f/22
Compensation
Distance
Aperture