Choose your reply from the options at the end. Does "The equation may be expressed as ratios, or, by taking the logarithm (base 2) of both sides, by addition, using the APEX system, in which every increment of 1 is a doubling of exposure; this increment is commonly known as a "stop"." contain the correct answer to "What is the effective f-number proportional to?"
Select from the following.
(i) yes
(ii) no
(ii)