Hi i never really use this A-AEP mode before so thought id give it a go. My manual says the following:
1 set the mode dial to <a-aep>
2 focus the subject
Move the AF point over the subject and press the shutter button half way (followed by a sign that looks like a clock and a number 4)?
all the subjects covered by the AF points flashing in red will be in focus.
Hold down the shutter button halfway and press the depth of field preview button to see the depth of field.
Now i follow the above but absolutly nothing happens apart from the scene im seeing in the viewfinder goes about 50% darker and there is a slight noise like something has just focused. But no numbers change nothing so what am i meant to be seeing/doing?
please advise