M77 - M48 Adapter with Spectral Pro

Designed for photographers working with M77-threaded lenses, this precision adapter facilitates direct mounting of a 47 mm Spectral Pro filter to your optical system. Ideal for Nikon DSLRs like the D750 where traditional clip-in solutions prove impractical, it delivers reliable performance across virtually any M77-compatible lens. Extensive compatibility testing validates its effectiveness with premium optics including the Samyang 135 mm. The adapter's robust engineering maintains optical integrity while providing the secure, threaded connection professional imaging demands. Whether you're pursuing spectral analysis, specialized wavelength control, or advanced photographic techniques, this adapter bridges the gap between your lens and Spectral Pro filtration with precision and dependability.

The Sigma 24 mm has a protruding first lens element and this mount has a stepped offset to ensure the filter and lens do not clash while threading.

It is designed with groves to improve handling while remaining sufficiently low profile to allow the lens hoods to by mounted and unmounted.

The clear aperture of this part is 46 mm meaning the effective f/# for a Samyang 135 is f2.9. 

Includes shipping taxes and duties. 4 week lead time. Price estimate is 60 - 90 euro for the cell only (excluding retaining ring - if you are interested in a retaining ring please enquire directly). With Spectral Pro price includes the mount and high CA retaining ring.