Canon EOS A2E - Manual (Page 43)

As long as Eye Controlled Focus mode is on,
eye controlled depth-of-field check is
possible even when the focusing point is se­
lected manually (refer to page 25).
• Eye controlled depth-of-field check must
be carried out within 5 seconds after fo­
cusing is completed. If more than 5 sec­
onds elapse, refocus the subject and then
look at the depth-of-field check mark
within 5 seconds.