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Focal Length & Maximum Aperture 800mm f/5.6

Lens Construction 18 elements in 14 groups

Diagonal Angle of View 3° 5' (with full-frame sensor camera)

Focus Adjustment Ring-type Ultrasonic Motor, with inner focus system; mechanical manual focus

Closest Focusing Distance 19.7 ft./6.0m (maximum close-up magnification: 0.14x)

Filter Size 52mm (Drop-in Gelatin Filter Holder)

Max. Diameter x Length, Weight 6.4 in. x 18.1 in./162mm x 461mm (maximum lens length);