![Optolong CLS (City Light Suppression) broadband filter is designed to improve the visibility of various deepsky objects.-Optolong Optics Co.,Ltd. Optolong CLS (City Light Suppression) broadband filter is designed to improve the visibility of various deepsky objects.-Optolong Optics Co.,Ltd.](https://www.optolong.com/uploads/images/20201125/08d02ea6a6dd0571db2f3ebde94e9da9.jpg)
Optolong CLS (City Light Suppression) broadband filter is designed to improve the visibility of various deepsky objects.-Optolong Optics Co.,Ltd.
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SVBONY CLS clip-in filter for Canon. - DSLR, Mirrorless & General-Purpose Digital Camera DSO Imaging - Cloudy Nights
![Optolong City Light Supression / Light Pollution Reduction CLS Filter - Clip Filter for Canon EOS Cameras with APS-C Sensor Optolong City Light Supression / Light Pollution Reduction CLS Filter - Clip Filter for Canon EOS Cameras with APS-C Sensor](https://agenaastro.com/media/catalog/product/cache/8e03964313a1df06445707bf7088f1a0/c/l/cls-ccd_1.jpg)