The Optolong L-PRO FF Filter (Optolong, SKU: L-PRO-FF) is designed to reduce light pollution caused by artificial lighting while enhancing emission nebulae. It is a broadband filter developed to preserve natural color balance in astrophotography.

Key features

• broadband filter for light pollution reduction
• transmits nearly all wavelengths with high efficiency while blocking only unwanted bands
• does not significantly alter colors compared to narrowband filters
• suitable for use with small aperture telescopes
• particularly effective when imaging near cities, suburbs, small towns or in rural areas

Main use and performance

• reduction of light pollution
• increased contrast for emission nebulae
• recommended for DSLR cameras
• compatible with color and monochrome CCD and CMOS cameras

Technical specifications

• filter type: broadband
• camera compatibility: Canon 5D Mark II, 5D Mark III, 5D Mark IV, 6D