The SkyTech CLS (City Light Suppression) filter is designed to improve the visibility of various deepsky objects by blocking light pollution, while allowing light from deepsky objects through.
SkyTech CLS filters are
suitable for unmodified Canon DSLRs. The CLS has a wider pass-band than a UHC filter, so it gives a more natural colour rendition than a UHC filter. CLS is therefore best for mild to moderate light pollution on city outskirts or suburban locations.
Compatible with all APS-C sized Canon EOS cameras. Not for full frame cameras. Do not use with Canon EFS lenses because the rear elements can strike the filter. This is not an issue with most Sigma and 3rd party EF-S lenses and of course telescopes.
Scope of Delivery:
Products specifications
| Thickness | 1mm |
| Coating | Multi-coating, anti-reflective |
| Cell | EOS Chlip Filter |
| Transmission | 95% transmission of main nebula emission lines (i.e. Ha 656nm, OIII 496nm & 500nm, SII 672nm and H-beta 486nm). |
