Optolong L-Pro Sony-FF Clip-In Filter

The Optolong L-Pro Clip-In Filter for Sony Full Frame (Sony-FF) cameras is a precision broadband filter designed to suppress light pollution while preserving the color and brightness of celestial objects. Ideal for Milky Way and deep-sky constellation imaging, this filter boosts contrast without sacrificing the natural appearance of stars and nebulae.

The L-Pro’s multi-band design blocks emissions from mercury and sodium vapor lamps, neutral oxygen skyglow, and other urban light sources—enhancing signal-to-noise ratio and background neutrality. With high transmission across key nebular emission lines including OIII, H-Beta, NII, H-Alpha, and SII, this filter is optimized for wide-field astrophotography using Sony E-mount cameras.

Whether you're capturing emission, reflection, or dark nebulae, this ultra-slim 1mm optical filter enables high-contrast images with vibrant, natural colors. It installs cleanly inside the camera body, preserving compatibility with the full range of Sony main and auxiliary E-mount lenses.

• Filter Type: Multi-Band Broadband (Light Pollution Suppression)
• Filter Size: Clip-In for Sony-FF (Full Frame)
• Bandwidth Range: 300nm – 750nm
• Blocking Depth: >90% for Light Pollution Bands
• Transmission Peak: High transmission of OIII, H-Beta, NII, H-Alpha, SII
• Substrate: Optical Glass
• Glass Thickness: 1.0mm
• Surface Quality: 60/40
• Wavefront Accuracy: λ/4
• Parallelism: <30 arcseconds
• Camera Compatibility: Sony A7M / A7M2 / A7M3, A7R / A7R2 / A7R3, A7S / A7S2 / A7S3, A9
• Lens Compatibility: Full range of E-mount lenses (main and auxiliary)
• Filter Housing: Lightweight Clip-In with EVA-lined PP Plastic Case
• Certification: RoHS, TUV Rheinland, Bureau Veritas

• L-Pro Sony-FF Clip-In Filter
• Protective Plastic Case with EVA Foam Lining