Canon EOS 1 Instruction Manual - Page 36

Manual Focusing, . Full-time Manual Focusing with USM Lenses

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Page 36 highlights

4. Manual Focusing Use manual focusing when the subject is difficult to focus with the camera's autofocus system, or when you need to control the focus for alternative focus effects. 1 Set the lens' focus mode switch to "M". • The AF mode display is extinguished in the LCD panel. 50mm 22 22 MODE AF ISO AF M N ON LENS EF 50mm 1: 1 4 AF M 2 N While pressing the shutter button halfway and looking through the viewfinder, turn the lens' manual focusing ring until the subject appears sharp. • When the focus mode is switched from "AF" to "M", the focusing point and infocus indicator in the viewfinder light when the subject is in focus. CANON LEN S ● Full-time Manual Focusing with USM (Ultrasonic Motor) Lenses USM lenses are equipped with a full-time manual focusing function that lets you immediately manually adjust the focus after autofocusing is completed to achieve the desired effect. Use this function in One-shot AF mode. • This method of focus adjustment cannot be used if your USM lens does not have a distance scale. Custom Function (Refer to pages 86-87) 36 When using a USM lens equipped with an electronic manual focusing system, setting this custom function will allow manual focusing only when the lens' focus mode switch is set to "M".

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36
AF
M
CANON
L
E
N
S
L
E
S
N
E
F
N
O
5
0
m
m
1
:
1
4
N
4. Manual Focusing
Use manual focusing when the subject is difficult to focus with the cam-
era’s autofocus system, or when you need to control the focus for alterna-
tive focus effects.
1
Set the lens’ focus mode switch to
“
M
”.
•
The AF mode display is extinguished
in the LCD panel.
2
While pressing the shutter button
halfway and looking through the
viewfinder, turn the lens’ manual
focusing ring until the subject
appears sharp.
•
When the focus mode is switched from
“
AF
” to “
M
”, the focusing point and in-
focus indicator in the viewfinder light
when the subject is in focus.
●
Full-time Manual Focusing with USM (Ultrasonic Motor) Lenses
USM lenses are equipped with a full-time manual focusing function that
lets you immediately manually adjust the focus after autofocusing is com-
pleted to achieve the desired effect. Use this function in One-shot AF
mode.
•
This method of focus adjustment cannot be used if your USM lens does not
have a distance scale.
MODE
AF
ISO
AF
M
22
22
50mm
N
AF
M
When using a USM lens equipped with an
electronic manual focusing system, setting
this custom function will allow manual focus-
ing only when the lens’ focus mode switch is
set to “
M
”.
Custom Function
(Refer to pages 86–87)