I have a few questions on computing exposure times?
If I know the correct exposure time at one f-stop (e.g. 1/50 at f/11), how do I compute the correct exposure time at a different f-stop.
If I am using a 4 in. focal length lens but the object that I am photographing is further away than that, how do I compute the correction exposure time dependent on how far away I place the object?
Any response will be helpful as I am lost.
Bookmarks