Question about lighting ratios

[EOBeav]

I have two strobes set up, each angles 45 degrees horizontally from the subject. Assuming no ambient light, if I shoot one at 1/4 power, and the second at 1/8, is that a 1:2 ratio? I'm assuming it is.

If I shoot one strobe at 1/4 power, and the second at 1/16, is that a 1:3 ratio?

Sorry for the ignorance, I just wanted to make sure I understood that concept correctly. Thanks in advance for your help.

 

[wickidwombat]

Yes thats right

 

[Menace]

try this too:

http://en.wikipedia.org/wiki/Lighting_ratio

 

[caruser]

Yes thats right

1/4 to 1/16 is 4:1 (not the OP's 3:1).