Modification Steps Continued:
40. The black plastic frame holding the original
IR cut filter (LPF#2) needs to be removed from the imaging sensor.
The plastic frame has an adhesive gasket fixing it to the sensor.
Use a chisel type flat blade razor to work along the top and bottom
of the filter frame. You can't work the razor under the sides
of the filter frame because the 6D has a small edge extending
downward toward the sensor. After loosening the top and bottom
of the filter frame, start working the razor in the corners and
work toward the center of each side's frame. Avoid breaking the
IR cut filter glass. It is very thin and breaks easily. If it
does break, be careful to clean any glass particles off the sensor
so that it is not scratched. Clean the cover glass of sensor under
bright light and high magnification to ensure that it is clean.
41. If the sticky gasket material came loose,
reapply it inside the black LPF#2 filter frame.
42. Place empty LPF#2 filter frame on sensor.
There are two plastic pins at the top of the filter frame that
are inserted into two holes in the metal frame of the sensor.
Use those as guides when placing the filter frame on the sensor.
Press firmly around the perimeter of the frame to be sure the
gasket material makes a good seal.
43. Clean the Astronomik MC Clear Glass under
bright light and high magnification to ensure that it is clean
and free of dust.
44. Place MC Clear Glass on LPF#2 filter frame
and fix in place with metal frame and two screws. Make sure the
metal frame snaps into place at all four corners:
45. Place the sensor assembly in the camera.
Install the three sensor adjustment screws and use the screw marks
and gauges made in Steps #30 and #31 to return the screws to their
46. With the Astronomik MC Clear Glass installed
and to perfect focus operation, a small adjustment should be made
to the three sensor adjustment screws from their original positions.
Using a torx driver adjust each sensor adjustment screw clockwise
by 1/2 tick as shown in the diagram below. "1/2 tick"
is one-half of the distance between the six points at the head
of the torx driver. Apply glue to the top of each sensor adjustment
screw to hold in place.
Reassembly begins by following
the previous directions in reverse beginning with Step
36. Ignore Step 33 because there is no ribbon cable to install,
since the piezzoelectric element was removed.
Note from Hap
Griffin: "The one place to really be careful is in re-installing
the right side of the camera (looking from the rear) as there
is a metal tab protecting the SD card slot cover switch that can
become jammed if the side piece is installed incorrectly (its
easy to do and requires a bit of finesse to get it on right without
damaging the switch)."
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For first light astro images taken with my Full Spectrum Canon
6D see HERE.