Table for shims to adjust Compact Prime CP.2 lenses when used on digital cameras
Example
Using a Compact Prime CP.2 35mm/T2.1 lens with an EF mount, scaled in feet and
a test chart at a test distance of 4 ft, an actual distance of 4 ft 1’ is measured.
Due to the table on page 14, a silver shim 0.013 mm must therefore be added to the
total thickness of the shims.
Note
Any combination of shims is possible to achieve the required thickness and therefore
the desired flange focal distance.
Always use the closest possible combination of shims.
11.
Determine the total thickness of the shims that are already installed in the lens groove.
Increase or decrease the total shim thickness according to the tables in the appendix by using
a flat-bladed screw-driver or a pair of tweezers.
12.
Place the black EF adapter ring on the lens barrel and tighten the screws using
a torque of 0.4 Nm.
13.
The next step is to place the silver EF mount on the EF adapter ring and tighten the screws
using a torque of 0.4 Nm.
14.
Recheck the flange focal distance of the lens (see section D)
in combination with the camera you use.
E. Appendix
Shim color
Thickness [mm]
silver
0.013
gold
0.019
purple
0.025
light blue
0.032
red
0.038
blue
0.051
white
0.064
green
0.076
orange
0.102
light purple
0.127
clear
0.152
10
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