the smaller the F stop is, the bigger/widder the opening lens gonna be!!!
if you want more light coming in, you have to maker sure you chose the smaller F stop
f/2= bigger opening (more light coming in)
f/22= smaller opening (less light coming in)
portrait f=2.5, 3.5, 4.5…… better to choose the smaller f stop, beacuse it makes more focus on the person, background is more blur than the bigger f stop
landscape/ a group of people f=12. 13.5.14….. better to choose the bigger f stop, beacuse it makes more things in the focus point.
vickiedeng 