Svbony CLS Clip-in Filter Canon DSLR EOS APS-C
Svbony CLS Clip-in Filter for Canon DSLR EOS APS-C
- Electron beam gun evaporation with Ion-assisted deposition coating technology for durability and resistance to scratching; as well as stability on CWL (central wavelength) no deviation affected by temperature change
- Planetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off band
- 90% transmission of main nebula emission lines; such as Ha 656nm;OIII 496nm&500nm;SII672nm and H-beta 486nm
- 0.1% transmission of off-band; specifically the major emission lines of artificial light pollution; such as Na 589nm;Hg 435nm and 578nm
- Urban optical filter can effectively suppress urban harmful light and improve the contrast of shooting target