Canon EOS-1D X EOS-1D Instructions - Page 73

When Autofocus Fails Manual Focusing

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Using Autofocus (AF) When Autofocus Fails (Manual Focusing) Autofocus can fail to achieve focus (the focus confirmation light blinks) with certain subjects such as the following: (a) Low-contrast subjects (blue sky, solid-color walls, etc.). (b) Subjects in low light. (c) Extremely backlit reflective subjects (car with a reflective body, etc.). (d) Overlapping near and far objects (animal in a cage, etc.). In such cases, do one of the following: 1. Focus an object at the same distance as the subject and lock the focus before recomposing. 2. Set the lens focus mode switch to < > (or < > on older lenses) and focus manually. (→p.26) If focus cannot be achieved with the AF-assist light of a Speedlite or ST-E2, select the center AF point. An off-center AF point might not be able to achieve focus. 3 73

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73
Using Autofocus (AF)
3
When Autofocus Fails (Manual Focusing)
Autofocus can fail to achieve focus (the focus confirmation light blinks) with certain subjects
such as the following:
(a)
Low-contrast subjects (blue sky, solid-color walls, etc.).
(b)
Subjects in low light.
(c)
Extremely backlit reflective subjects (car with a reflective body, etc.).
(d)
Overlapping near and far objects (animal in a cage, etc.).
In such cases, do one of the following:
1. Focus an object at the same distance as the subject and lock the focus before recomposing.
2. Set the lens focus mode switch to <
> (or <
> on older lenses) and focus manually.
(
→
p.26)
If focus cannot be achieved with the AF-assist light of a Speedlite or ST-E2, select
the center AF point. An off-center AF point might not be able to achieve focus.