Hasselblad CF22 CF39 - Manual (Page 60)

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Cleaning the CCD Infrared Filter
If you see dark or coloured spots or lines in your images, then you may need to clean the
outer surface of digital back’s infrared (IR) filter. In most cases, the careful use of com-
pressed air will be adequate, but sometimes small particles will get stuck to the surface
of the IR filter, requiring for a more thorough cleaning, involving either fluid or wipes.
For a good safe cleaning, follow descriptions below.
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WARNING: never attempt to remove the glass filter from the front of the CCD—you
will probably ruin the CCD if you do so. If dust manages to get between the IR filter
and CCD, please contact your Hasselblad dealer for assistance.
Basic cleaning procedure
1. Discharge any static electricity that may have built up on your body by touching the
digital back housing.
2. Unlock the digital back from the camera (according to camera model).
3. The top of the digital back will be released (while it rests on the magazine retaining
hooks) and it can be swung away from the camera body.
4. Clean the outside surface of IR Filter by spraying it with clean compressed air. If this
is not enough, then use one of the procedures outlined below.
5. If you still see spots on your shot after you have cleaned the outside of the infrared
filter, then you may have dust on either on the back side of the IR filter or on the CCD
itself. This can only be removed at the Hasselblad factory. Contact your Hasselblad
dealer for assistance.
6. When reattaching the digital back to the camera, keep the magazine catch lock
depressed and the magazine catch to the right. Check that the back is firmly in place.
Cleaning using the HAMA Cleaning Fluid and tissues
Note! Hasselblad recommends HAMA Optic Cleaning Fluid 5902.
1. Carefully spray the fluid onto the IR filter at a distance of 10-15 cm (4-5 inches), so
that the fluid is applied onto the filter as a thin, even haze. 1-2 sprays are enough. If
you apply too little, the fluid will start to dry up before you start wiping the filter. As
an alternative you can spray the fluid onto the tissue first, and then apply it to the
filter as you wipe it.
Cleaning
Regularly check the surface of the sensor
filter for dust specks that might cause time-
consuming retouching afterwards.
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