Canon EF400mm f/2.8L IS USM

• Specifications
• Reviews
• Sample Images
• Initial launch information.

The 400mm is immediately notable by its relatively huge front element. At f/2.8 it offers razor thin depth of field and clarity. Godd stabilisation and rapid focus.

Available from: Amazon.com | Amazon.co.uk | B&H | Adorama

Lens specifications

Focal Length & Maximum Aperture	400mm 1:2.8
Lens Construction	17 elements in 13 groups
Diagonal Angle of View	6° 10'
Focus Adjustment	Ring type USM, inner focusing system, full-time manual focus
Closest Focusing Distance	3m / 9.8 ft., 0.15 x magnification
Filter Size	52mm rear drop in
Max. Diameter x Length, Weight	163 x 349mm / 6.4" x 13.7"; 5.370g / 11.8 lbs

Which 400mm? - a list of all versions

Canon EF 400mm
Attribute	f/2.8 USM	f/2.8 II USM	f/2.8 IS USM	f/2.8 IS II USM	f/2.8 IS III USM	f/4 DO IS USM	f/5.6 USM	f/4 DO IS II USM
Key features
Full-frame compatible	Yes
Image stabilizer	No		Yes				No	Yes
Ultrasonic Motor	Yes
L-series	Yes
Diffractive Optics	No					Yes	No	Yes
Technical data
Aperture (max-min)	f/2.8-f/32					f/4-f/32	f/5.6-f/32	f/4-f/32
Construction	9 groups / 11 elements		13 groups / 17 elements				6 groups / 7 elements	12 groups /18 elements
Aperture blades	8			9		8		9
Closest focusing distance	4m		3m	2.7m	2.5m	3.5m		3.3m
Max. magnification	0.11x		0.15x	0.17x		0.12x	0.11x	0.13x
Diagonal viewing angle	6 °
Physical data
Weight	13.44 lb / 6.1 kg	13.03 lb / 5.91 kg	11.83 lb / 5.37 kg	8.48 lb / 3.85 kg	6.26 lb / 2.84 kg	4.27 lb / 1.94 kg	2.8 lb / 1.25 kg	2.1 kg
Maximum diameter	6.57" / 167mm		6.41" / 163mm			5.03" / 128mm	3.54" / 90mm/	5.04" /128mm
Length	13.70" / 348mm		13.74" / 349mm	13.50" / 343mm		9.16" / 232.7mm	10.09" / 256.5mm	9.16" / 232.7mm
Filter diameter	48mm		52mm drop-in filter				77mm	52mm drop-in
Accessories
Lens hood	ET-161B II		ET-155	ET-155 (WII)	ET-155 (WIII)	ET-120	Built-in	ET120 (WII)
Case			400	400C	400E	400B		400D
Retail information
Release date	April 1991	March 1996	Sept. 1999	Aug. 2011	Sept. 2018	Dec. 2001	May 1993	Sept. 2014

EF400mm f/2.8L IS USM reviews and articles

• Canon UK / US Information Page
• Amazon
• Northlight Images
• Canon CPN article
• Fred Miranda
• Lens Tip
• Digital Picture
• PhotoZone
• SLR Gear
• Lens Review
• ePhotozine

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Sample images

None available at present.

Product launch

No information available on the 1999 launch of this lens.