Canon EOS 55 Service Manual page 123

Part 3: Repair Information
3.4
VIEWFINDER
Focus
ADJUSTMENT
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: lt-J 0•MH
Be sure to adjust the viewfinder focus after the FFD adjustment. :
L---------------------------------------------------------------------------------~
PuRPosE:
To match the viewfinder focus with the film focus position.
STANDARD:
The finder should be sharpest within 1.5 index line widths, as shown in figure 3-42.
TOOLS:
8 15
2.5 5
Center of
00
mark
ft
m
22
11 !N'1
22
/ ; ~Index
1.5 line
widths
Fig. 3-42 Lens Focusing Scale and Index
AD-S magnifier / EF50mm
f
I
1.8 / Universal 500 mm collimator
Al>JuSTIIENT:
1) Install the magnifier on the eyepiece and adjust
it
to your eyesight. (The lens
should not be installed at this point.)
Eyesight adjustment procedure
Aim the camera at a bright source EV 12 or over (white wall or light source of
shutter tester), and tum the eyesight adjustment ring of the magnifier until the
focusing frame is as sharp as possible.
2) Install an EF50mm
f
I
1.8 to set the focusing scale to manual.
3) Find a distant target at least 250 meters away (lighting rod or chimney if possi-
ble) and select the sharpest focus washer.
4) If the collimator is used, select a focus washer in which the sharpest scale of the
collimator can be seen.
3-32