Canon C12-8453, Service Manual

Page: 175 / 271

1.14 AF F
OCUS
D
ATA
C
HECK
P
URPOSE
:
To check the AF focus adjustment.
T
OOLS
:
EF 50 mm f/1.8 tool lens
Video Light
Tripod
Charts
C
HECK
P
ROCEDURE
:
1) Set up the charts and camera as
indicated for focus adjustment.
2) Start the adjustment software, and
select [F3] AF Adjustment menu in
the Main menu.
3) Set up the chart, and set the lens to
the manual mode. Align the chart
with the line inscribed on the tool
lens.
4) Select [F4] Focus Data Output in the
AF menu.
Use autofocusing on each chart to
check that the focus amount is
within the standard shown in the
following table.
5) If the result is not within the
standard, replace the AF unit.
Table 4-2 Defocus Standards
Part 4: Electrical Adjustment
4-27
AFDEF
Focus data output
Press RETURN key to return to Focuing data output menu.
TOP
000.000
Center
(V)000.000
(H)000.000
Bottom
000.000
Left
000.000
Right
000.000
Left
Center
000.000
Right
Center
000.000
Reference chart
Single bar chart 45˚ bar chart
Center
vertical Center
horizontal
Periphery
50 mm f/1.8
tool lens
0.030 0.030 0.039 0.060 0.060 0.080 0.120 0.140 0.130
Center
vertical Center
horizontal
Periphery
Center
vertical Center
horizontal
Periphery