Canon EOS-1D X Mark III EOS-1DX Mark III Advanced User Guide - Page 339
Shooting Conditions That Make Focusing Difficult
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Shooting Conditions That Make Focusing Difficult 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 surfaces, etc.) Near and distant subjects positioned close to an AF point. (Example: Animals in cages, etc.) Light source such as dots of light positioned 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 ( ). 2. Set the lens's focus mode switch to < > and focus manually ( ). Note Depending on the subject, focus may be achieved by slightly recomposing the shot and performing AF operation again. 339