Comparison of Canon EF 200mm f/2L IS USM and Canon EF 400mm f/2.8L IS USM

Attribute	Canon EF 400mm f/2.8L IS USM ×	Canon EF 200mm f/2L IS USM ×
Aperture (f)	2.80 - 32.00	2.00 - 32.00
Filter Size (mm)	52	52
Notes	Image Stabilization	Image Stabilization
Closest Focus (m)	3	1.9
Magnification Ratio (x)	0.15	0.12
Diameter (mm)	163	128
Focus Details	Inner focusing; full-time manual focus and USM	Internal focusing; full-time manual focus and USM
Focal Length (mm)	400.00	200.00
Diaphragm Blades	8	8
Brand	Canon	Canon
Image Circle	35mm	35mm
Name	Canon EF 400mm f/2.8L IS USM	Canon EF 200mm f/2L IS USM
Weight (g)	5370	2520
Type	Telephoto Prime	Telephoto Prime
Diaphragm Blades Type	-	circular
Lens Construction	17 elements in 13 groups, including 1 flourite and 2 UD elements	17 elements in 12 groups, including flourite and UD elements
Diagonal Angle of View (degree)	6.20	12.00
Length (mm)	349	208
APS Equivalent	640mm	-
APS-C Equivalent	-	320mm