The Meike 85mm T2.1 lens from the FF-Prime Cine Series has a circular 45mm diameter, is compatible with all FF cameras and comes in PL/EF/RF/E/L mount options. This makes it compatible with Sony, Panasonic, Canon, Sigma and Leica DSLM cameras equipped with FF/Super 35/APS-C size sensors and Canon C700, Sony Venice, Alexa LF, Z Cam E2-F6, Mavo LF, etc. Of course, standard M0.8mm focus ring gear and side focus aperture are standard. The full planned FF-Prime Cine line will offer 16mm T2,1, 24mm T2,1, 35mm T2,1, 50mm T2,1, 85mm T2,1, 105mm T2,1 and 135mm T2,1 models.SpecsManufactured for PL/EF/RF/E/L bayonetsMin. focusing distance: 85 cmFor filters: ø82Construction: 14 elements in 8 groupsFocal length: 85 mmFocal length range: T2,1-T22Number of aperture blades: 11Gearing: M0.8Focus ring rotation range: 330°Dimensions (Ø x L): PL: φ89.6 × 102.4mm, EF (Canon): φ89.6 × 110.5mm, RF (Canon): φ89.6 × 134.4mm, E (Sony): φ89.6 × 136.4mm, L (Panasonic): φ89.6 × 134.4mmWeight: 1,170 gAngle of view (for FF sensors): diag. 29.5°, horiz. 23.6°, vert. 17.8°Shooting angle (for APS-C sensors): diag. 19.2°, horiz. 15.3°, vert. 11.5°