Canon CJ20x7.8B 4K Lens

Mount B4
Image Coverage 9.6×5.4mm
Built-in extender 2.0×
Focal Length 7.8-156mm
(with Extender) 15.6-312mm
Zoom ratio 20×
Maximum Relative Aperture
1:1.8 at 7.8-108mm
1:2.6 at 156mm
(with Extender)
1:3.6 at 15.6-216mm
1:5.2 at 312mm
Angular Field of View
63.2°× 38.2°
3.5°× 2.0
(with Extender)
34.2°× 19.6°
1.8°× 1.0°
M.O.D ( from Image Plane )
0.80m (10mm with Macro)
Object Dimensions at M.O.D.
91.7×51.6cm[at 7.8mm] 4.8×2.7cm [at 156mm]
(with Extender)
45.9×25.8cm [at 15.6mm] 2.4×1.4cm [at 312mm]
Approx. Size (W×H×L) 169.9 × 114.4 × 230.0mm
Approx. Mass 2.18kg