When autofocus fails (manual focusing) – Canon EOS 1 V HS User Manual

Page 47

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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.Ox:

• 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 < HE) > button is pressed, " o “

the display shown on the right

p |-

appears on the LCD panel.

^ ^

I

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

IVI

on older lenses) and focus

manually.

0 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.

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