Canon EF 300mm f/4L USM

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

Excellent quality lens, although newer versions show modest improvements in image quality.

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

Lens specifications

Focal Length & Maximum Aperture	300mm 1:4.0
Lens Construction	8 elements in 7 groups
Minimum Aperture	32
Maximum magnification (x)	0.13
Closest Focusing Distance	2.5m
Filter Size	77mm
Max. Diameter x Length, Weight	90 x 213.5mm, 1165g

300mm versions

Version	f/2.8L USM	f/2.8L IS USM	f/2.8L IS II USM	f/4L USM	f/4L IS USM
Image stabilizer	No	Yes	Yes	No	Yes
Ring USM	Yes
L-series	Yes
Diffractive Optics	No
Ultra-low dispersion glass element	Yes
Macro	No
Maximum aperture	f/2.8			f/4
Minimum aperture	f/32
Weight	2.855 kg	2.550 kg	2.400 kg	1.165 kg	1.190 kg
Max. Diameter x Length	12.8 cm x 25.2 cm		12.8 cm x 24.8 cm	9.0 cm x 22.1 cm
Filter diameter	48 mm drop-in	52 mm drop-in		77 mm
Horizontal viewing angle	6° 50'
Vertical viewing angle	4° 35'
Diagonal viewing angle;	8° 15'
Groups/elements	8/10	13/17	12/16	7/8	11/15
Diaphragm blades	8		9	8
Closest focusing distance	3 m	2.5 m	2 m	2.5 m	1.5 m
Release date	November 1987	July 1999	September 2010	December 1991	March 1997

Note that there is a Canon 300/1.8 lens used for horse racing photofinishes - there is however very little info about this rare lens and it is not listed on any Canon sites.

EF 300mm f/4L 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.

Product launch

No inforamtion available on the 1991 launch of this lens.