Canon EF 8-15mm f/4L Fisheye USM
Focal Length & Maximum Aperture15mm 4.0
Lens Construction14 elements in 11 groups
Diagonal Angle of View180°
Focus AdjustmentLens extension via inner focusing and focus cam plus floating mechanism
Closest Focusing Distance0.16m / 6.2 in.
Filter SizeRear Gel Holder (accepts up to 3 pre-cut gel filters)
Max. Diameter x Length, Weight3.1 x 3.7 in, 19.1 oz. / 78.5 x 83.0mm, 540g