Canon EOS50D EOS 50D Instruction Manual - Page 126

Shooting conditions which can make focusing difficult

Page 126 highlights

Using AF to FocusN Shooting conditions which can make focusing difficult: Low-contrast subjects such as the blue sky and solid-color surfaces. Subjects in low light. Stripes and other patterns where there is contrast only in the horizontal direction. Under a light source whose brightness, color, or pattern keeps changing. Night scenes or points of light. Under fluorescent lighting or when the image flickers. Extremely small subjects. Subjects strongly reflecting light. The AF point covers both a near and faraway subject (such as an animal in a cage). Subjects which 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. Autofocusing while the subject is way out of focus. Soft focus effect is applied with a soft focus lens. A special effects filter is used. 126

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126
Using AF to Focus
N
Shooting conditions which can make focusing difficult:
Low-contrast subjects such as the blue sky and solid-color surfaces.
Subjects in low light.
Stripes and other patterns where there is contrast only in the
horizontal direction.
Under a light source whose brightness, color, or pattern keeps
changing.
Night scenes or points of light.
Under fluorescent lighting or when the image flickers.
Extremely small subjects.
Subjects strongly reflecting light.
The AF point covers both a near and faraway subject (such as an
animal in a cage).
Subjects which 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.
Autofocusing while the subject is way out of focus.
Soft focus effect is applied with a soft focus lens.
A special effects filter is used.