Editing Canon EOS (section)

===Eye-controlled focusing===

Through the [[Eye tracking|tracking of eyeball movements]], EOS cameras equipped with eye-controlled focusing (ECF) (some identifiable by the suffix E) were able to select the desired autofocus point in the scene, based on where the user was looking in the viewfinder frame.  ECF was especially useful in sports photography where the subject may shift its position in the frame rapidly.

EOS cameras equipped with ECF were the [[Canon EOS 5/A2/A2e|EOS A2E]] (U.S. model names are shown; see the table below for equivalents in other countries), EOS Elan IIE, EOS IXe, [[Canon EOS-3|EOS-3]], [[Canon EOS 30|EOS Elan 7E]], and [[Canon EOS 30V|EOS Elan 7NE]].

Canon did not continue its use of eye-controlled focusing for its digital SLRs. The EOS Elan 7NE was the last EOS camera to have this function, until 2021 when Canon reintroduced eye-controlled focus with the [[Canon EOS R3|EOS R3]]. Canon has continued to add this functionality to new high end EOS cameras, such as the EOS R1 and EOS R5 Mark II.