Canon EOS 3 User Manual (en)

6. Focusing an Off-Center Subject
To focus a subject not covered by the area AF ellipse, follow the
procedure below. This technique is called focus lock.
• Focus lock works only in the One-Shot AF mode. See page 35.
Aim the focusing point on the
subject and press the shutter
button halfway to focus.
Keep pressing the shutter button
halfway (this locks the focus) and
recompose the picture as desired.
Press the shutter button completely
to take the picture.
Evaluative metering is recommended for use with the One-Shot AF mode which
locks the autoexposure setting (AE lock) at the same time focus is achieved. The
exposure metering is linked to the focusing point.
 04. C836-E (33~)  28-01-2003  11:11  Pagina 49