Canon 0020C003 Digital Camera User Manual

Using AF to Focus (AF Method)
If focus is not achieved with the shooting conditions on the preceding
page, set the lens focus mode switch to <MF> and focus manually.
If you use AF with any of the following lenses, focusing may take longer
or correct focus may not be achieved.
EF50mm f/1.4 USM, EF50mm f/1.8 II, EF50mm f/2.5 Compact Macro,
EF75-300mm f/4-5.6 III, EF75-300mm f/4-5.6 III USM
For information on discontinued lenses, refer to the Canon Web site.
If you shoot a peripheral subject and it is out of focus, aim the center AF
point or zone over the subject to focus, focus again and then take the
The AF-assist beam will not be emitted. However, if an EX-series
Speedlite (sold separately) equipped with an LED light is used, the LED
light will turn on for AF-assist when necessary.
In magnified view, focusing may be difficult due to camera shake. Using
a tripod is recommended.