Difficult subjects for autofocus – Canon EOS 650 User Manual

Page 30

Attention! The text in this document has been recognized automatically. To view the original document, you can use the "Original mode".

9. Difficult Subjects for Autofocus

Although the AF system of the camera is very ac

curate, it is not'perfect. The following subjects are

difficult for autofocus. When AF is impossible, the

green

in-focus

indicator

will

blink

the

viewfinder.

Subjects

Low contrast subjects

(misty scenes, light-colored or white objects)............ (A)

Subjects in extremely low-light situations

(a dark room, night scenes)...........................................(B)

Subjects having generally horizontal patterns

(window blinds)............................................................. (C)

Subjects in extremely strong backlight with

strong reflections

.....................................................................................(D)

Subjects with an object in front of them

(caged zoo animals)....................................................... (E)

Fast-moving subjects

(difficult to keep within the AF frame)...........................(F)

(C)

(E)

Focus these subjects as follows:

1. Autofocus a substitute subject at the same

distance from the camera as your main sub

ject, and then recompose the picture ....................... (A)

2. Flold the camera vertically and focus the sub

ject using autofocus then recompose the pic

ture .................................:.............................................(C)

3. Manually focus the subject following the steps on

the next page.