Canon EOS-1V HS manual When Autofocus Fails Manual Focusing

Focusing an Off-Center Subject

(3)With the following Extenders and L-series lenses whose maximum aperture is brighter

than f/8, the center focusing point will be sensitive to horizontal lines only. The other focusing points cannot be used for AF.

•With Extender EF 1.4x:

·EF 400mm f/5.6L USM

·EF 500mm f/4.5L USM

·EF 100-400mm f/4.5-5.6L IS USM

•With Extender EF 2.0x:

·EF 300mm f/4 L USM

·EF 300mm f/4L IS USM

·EF 500mm f/4L IS USM

·EF 600mm f/4L USM

·EF 600mm f/4L IS USM

·EF 70-200mm f/4L USM

• When the < > button is pressed, the display shown on the right appears on the LCD panel.

When Autofocus Fails (Manual Focusing)

Autofocus can fail to achieve focus (the in-focus indicator 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 or 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 MF (or M on older lenses) and focus manually.

If focus cannot be achieved with the AF-assist light of a Speedlite or ST-E2, select the center focusing point. An off-center focusing point might not be able to achieve focus.

47