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Canon J17ex7.7B4 standard lens

Canon J17ex7.7B4 standard lens The J17ex7.7B is featuring the new breakthrough technology. Canon has developed breakthrough optical design concept using a newly developed optical element in the most effective way. We have named the new design concept the Power Optical System which can achieve higher specifications and quality in smaller size and lighter weight, using the new optical X-Element which realize complete elimination of its aberration. Canon 16×9/4×3 crossover system for switchable cameras is available as an option (WRSE/WASE). Compact & lightweight! Improved specification as standard lens. X-Element & Power Optical System Digital Drive Equipped with Canons original Rotary Encoder Device Zoom Ratio 17x Built-in Extender 2.0x Range of Focal Length (with Extender) 7.7~131mm 15.4~262mm (2.0x) Maximum Relative Aperture (with extender) 1:1.8 at 7.7~102.5mm 1:2.3 at 131mm 1:3.6 at 15.4~205mm (2.0x) 1:4.6 at 262mm (2.0x) Angular field of view (with Extender) 4:3 Aspect Ratio (8.8 x 6.6mm) 59.5° x 46.4° at 7.7mm 3.85° x 2.89° at 131mm 31.9° x 24.2° at 15.4mm (2.0x) 1.92° x 1.44° at 262mm (2.0x) 16:9 Aspect Ratio (9.6 x 5.4mm) 63.9° x 38.6° at 7.7mm 4.20° x 2.36° at 131mm 34.6° x 19.9° at 15.4mm (2.0x) 2.10° x 1.18° at 262mm (2.0x) Minimum Object Distance (M.O.D.) 0.6m (10mm with Macro) Object Dimensions at M.O.D. (with Extender) 4:3 Aspect Ratio (8.8 x 6.6mm) 63.1 x 47.3cm at 7.7mm 3.8 x 2.9cm at 131mm 31.6 x 23.7 at 15.4mm (2.0x) 1.9 x 1.5cm at 262mm (2.0x) 16:9 Aspect Ratio (9.6 x 5.4mm) 68.5 x 38.5cm at 7.7mm 4.2 x 2.4cm at 131mm 34.3 x 19.3cm at 15.4mm (2.0x) 2.1 x 1.2cm at 262mm (2.0x) Macro No Size (W x H x L) 163.9 x 106.3 x 197.4mm Weight 1.47kg (3.24lbs) 1.57kg (3.46lbs)