Canon EOS 77D - Subjects Difficult to Focus on

145
Autofocus may fail to achieve focus (focus indicator <o> in the
viewfinder blinks) with special subjects such as the following:
 Subjects with very low contrast
(Example: Blue skies, solid-color flat surfaces, etc.)
 Subjects in very low light
 Strongly backlit or reflective subjects
(Example: Cars with highly reflective bodies, etc.)
 Near and distant subjects framed close to an AF point
(Example: Animals in cages, etc.)
 Subjects such as dots of light framed close to an AF point
(Example: Night scenes, etc.)
 Subjects with repetitive patterns
(Example: Skyscraper windows, computer keyboards, etc.)
 Subjects with finer patterns than an AF point
(Example: Faces or flowers as small as or smaller than an AF point,
etc.)
In such cases, focus in either of the following two ways.
(1) With One-Shot AF, focus on an object at the same distance as the
subject and lock the focus, then recompose the shot (p.87).
(2) Set the lens’s focus mode switch to <MF> and focus manually.
Subjects Difficult to Focus on
 Depending on the subject, focus may be achieved by slightly
recomposing the shot and performing AF operation again.
 For conditions that make focusing difficult with AF during Live View
shooting or movie shooting, see page 266.