Comparison of Canon EF 400mm f/5.6L USM and Fujinon GF 100-200mm f/5.6 R LM OIS WR

Attribute	Canon EF 400mm f/5.6L USM ×	Fujinon GF 100-200mm f/5.6 R LM OIS WR ×
Filter Size (mm)	77	67
Notes	Built-in hood; detachable tripod mount	For Fujifilm G-mount; Optical Image Stabilization (5-stops); Weather, dust and freeze resistant
Closest Focus (m)	3.5	0.6
Magnification Ratio (x)	0.12	0.2
Zoom System	-	Rotary
Type	Telephoto Prime	Telephoto Zoom
APS Equivalent	640mm	-
Diameter (mm)	90	89.5
Image Circle	35mm	Medium Format (Fujifilm G-mount)
Focal Length (mm)	400.00	100.00 - 200.00
Brand	Canon	Fujinon
Name	Canon EF 400mm f/5.6L USM	Fujinon GF 100-200mm f/5.6 R LM OIS WR
Weight (g)	1250	1050
Aperture (f)	5.60 - 32.00	5.60 - 32.00
Diaphragm Blades	8	9
Diagonal Angle of View (degree)	6.20	15.60 - 30.60
Lens Construction	7 elements in 6 groups, including 1 UD and 1 S-UD element	20 elements in 13 groups, including 1 aspherical and 2 Super ED elements
Diaphragm Blades Type	-	rounded
Length (mm)	256	183
35mm Equivalent	-	79 - 158mm
Focus Details	Inner focusing; full-time manual focus and USM	Inner focusing mechanism; AF using a linear motor; Focus limiter switch