TRIBE7 BLACKWING7 PRIMES Tribe7 Blackwing7 Prime 20.7MM Focal Length 20.7mm Aperture T1.9 Close Focus 7.5” Weight (lb) 3.6 Length (in) 4.5 Image Circle (mm) 50 Front Diameter (mm) 104 Lens Mount PL Tribe7 Blackwing7 Prime 27MM Focal Length 27mm Aperture T1.9 Close Focus 13” Weight (lb) 3.6 Length (in) 4.5 Image Circle (mm) 55 Front Diameter (mm) 104 Lens Mount PL Tribe7 Blackwing7 Prime 37MM Focal Length 37mm Aperture T1.9 Close Focus 18” Weight (lb) 3.4 Length (in) 4.5 Image Circle (mm) 60 Front Diameter (mm) 104 Lens Mount PL Tribe7 Blackwing7 Prime 47MM Focal Length 47mm Aperture T1.9 Close Focus 17.5” Weight (lb) 3.2 Length (in) 4.5 Image Circle (mm) 60 Front Diameter (mm) 104 Lens Mount PL Tribe7 Blackwing7 Prime 57MM Focal Length 57mm Aperture T1.9 Close Focus 19” Weight (lb) 3.5 Length (in) 4.5 Image Circle (mm) 60 Front Diameter (mm) 104 Lens Mount PL Tribe7 Blackwing7 Prime 77MM Focal Length 77mm Aperture T1.9 Close Focus 26” Weight (lb) 3 Length (in) 4.5 Image Circle (mm) 60 Front Diameter (mm) 104 Lens Mount PL Tribe7 Blackwing7 Prime 107MM Focal Length 107mm Aperture T1.9 Close Focus 27” Weight (lb) 3.2 Length (in) 4.5 Image Circle (mm) 60 Front Diameter (mm) 104 Lens Mount PL Tribe7 Blackwing7 Prime 137MM Focal Length 137mm Aperture T1.9 Close Focus 32” Weight (lb) 3.2 Length (in) 4.5 Image Circle (mm) 60 Front Diameter (mm) 104 Lens Mount PL