Canon EOS-1V Service Manual page 79

1.13 AF F
OCUS
• Before doing this adjustment, first complete the temperature correction,
basic AF adjustments, and flange focal distance adjustment.
• Be careful not to have dust particles adhering to the main mirror, sec-
ondary mirror, and AF sensor.
CAUTION
• There are two AF focus adjustments: Overall AF adjustment and uniform
AF shift. Overall AF adjustment adjusts all of the Area AF's sensors.
Uniform AF shift is the same as with the conventional AF shift which cor-
rects all the sensors as desired.
PURPOSE
To record the AF's standard distance.
TOOLS
EF 50mm f/1.8 tool lens
Video light
Tripod
AF Standard Chart (CY9-1124-000)
Best Focus Tester (CY9-7110-000, CY9-7110-001)
PREPARATIONS
1) As shown in the figure below, place the camera 2.5 m +/-1 cm away from the AF
Standard Chart (vertical). Place the chart horizontally and use the video light to
illuminate it evenly at EV 12 (in the Program mode, Tv=1/125 sec. and
Av=f/5.6).
2) Start up the adjustment software. On the Main Menu, select the AF Adjustment
Menu.
A
DJUSTMENT
Fig. 4-12 AF focusing adjustment set-up.
4-25
Part 4: Electrical Adjustments
Illuminate the chart evenly
at about EV 12.
2.5m+/-1cm