User manual

54 Shooting with the SI-2K SI 2K Manual
Cleaning Optics
Ideally, the optics behind the optical low pass filter (OLPF) should remain clean.
If debris does get behind the filter, two screws with pads to protect the filter
can be removed to give the user access to both the back of the filter and the
sensor cover glass.
All cleaning should be done with the same care as would be shown with a qual-
ity lens. First, compressed air should be used (without shaking the can to avoid
spraying propellant). Next a soft lens brush can be used to dislodge particles.
If this fails to properly clean the optics, a liquid optic cleaner and lens tissue,
micro fiber cloth or lintless lens swab can be used with care.