Optolong CLS-CCD Clip Filter Canon EOS APS-C: suppress light pollution from within the body
You click a clip-filter into the camera body in seconds, directly in front of the sensor. Then you simply mount your lens or telescope adapter: the filter protects the sensor and filters every image you take. This CLS filter (City Light Suppression) blocks the disruptive emission lines of street lighting, while allowing the light from nebulae and galaxies to pass through.
The result under a city sky: a darker background, more contrast, and longer usable exposure times before light pollution overwhelms the image.


Click and shoot
The filter is installed and removed without tools and does not affect camera functions. Please note for Canon APS-C: EF-S type lenses extend too far into the body with their rear lens and cannot be used with a clip filter. EF lenses and telescope adapters work without limitation.
For astrogemodified cameras
This CLS-CCD version blocks not only light pollution but also infrared light. This makes it the right choice for astro-modified cameras whose internal IR blocking filter has been removed: color balance and sharpness are retained.
Featured accessories
For darker skies or nebula photography with more contrast, the Optolong UHC clip or an L-series filter is the next step.
For whom yes and for whom no
- ✓ Deep-sky photographers shooting from the city or outskirts
- ✓ For those who want to continue using any lens without modification
- ✗ Owners of unmodified cameras: the standard CLS version is then sufficient
Specifications
| Type | CLS-CCD clip filter (light pollution) |
| Camera system | Canon EOS APS-C |
| Placement | In the camera body, in front of the sensor |
| IR Blocker | Yes |
| Observation goals | Deep-sky photography under a light-polluted sky |
You can find more accessories for this brand at the Optolong brand page.







Reviews
There are no reviews yet.