Hi, I have recently bought 5D Mark-III (with 24-105 L) and still trying to make sense of menu options and its usage. Instead of locking exposure using center focus point and then recomposing the shot I wanted to have the ability to lock the exposure to selected AF point in manual mode. To achive above, (after reading the manual) I did the following: 1. Put metering mode to Evaluative Metering. 2. Selected - Single Point AF. 3. Selected - Single Shot mode. But I still couldn't achieve exposure locked to manually selected AF point, and keep on getting under exposed images in case of backlit subjects. Any ideas what else I need to do to get the desired results? Thanks for your help.