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Using AF to Focus (AF Method)
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Shooting Conditions that Make Focusing Difficult
Subject with low-contrast such as the blue sky, solid-color flat
surfaces or when highlight or shadow details are lost.
Subjects in low light.
Stripes and other patterns where there is contrast only in the
horizontal direction.
Subjects with repetitive patterns (skyscraper windows, computer
keyboards, etc.).
Fine lines and subject outlines.
Under a light source whose brightness, color, or pattern keeps
changing.
Night scenes or dots of light.
Under fluorescent or LED lighting when the image flickers.
Extremely small subjects.
Subjects at the edge of the picture.
Subjects strongly reflecting light.
Near and distant subjects covered by an AF point (such as an
animal in a cage).
Subjects that keep moving within the AF point and cannot keep still
due to camera shake or subject blur.
A subject approaching or moving away from the camera.
Performing AF while the subject is very far out of focus.
Soft focus effect is applied with a soft focus lens.
A special effect filter is used.
Noise (spots, banding, etc.) appears on the screen during AF.