Canon EF100 f/2 USM

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

A good basic well built prime lens that still performs well. The fast f/2 aperture makes for an excellent medium telephoto for portrait work on full frame. Sharp even at full aperture whilst AF speed is good for an older lens.

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

Lens specifications

Focal Length & Maximum Aperture	100mm 1:2.0
Lens Construction	8 elements in 6 groups
Diagonal Angle of View	24°
Focus Adjustment	Rear focusing system with USM
Closest Focusing Distance	0.9m / 3 ft.
Filter Size	58mm
Max. Diameter x Length, Weight	3.0" x 2.9", 1.0 lbs. / 75.0 x 73.5mm, 460g

A quick guide to MTF charts (which only measure contrast and resolution. Canon's guide to their MTF charts) Black lines reflect lens performance at widest aperture. Blue lines show the performance at f/8 Thick lines indicate lens contrast Thin lines indicate lens resolution Dashed lines: Lens performance with meridional lines. Solid lines: Lens performance with sagittal lines Closer sagittal and meridional chart lines indicate more 'natural' out of focus areas. Remember that MTF charts are good for comparing similar lenses, so comparing ones from the 14mm f2.8L and 300mm 2.8L won't tell you much at all, whilst comparing the EF14 2.8L with the EF14 2.8L II will show meaningful differences. Note that other manufacturers may have different ways of displaying such information that may or may not match up with the Canon figures.

EF 100mm versions

Version	f/2.8 Macro	f/2.8 Macro USM	f/2.8L Macro IS USM	f/2.0 USM
Full frame	Yes
IS	No		Yes	No
USM	No	Yes
L-series	No		Yes	No
Diffractive Optics	No
Macro	Yes			No
Aperture (max-min)	f/2.8-f/32			f/2.0-f/22
Construction	9 groups / 10 elements	8 groups / 12 elements	12 groups / 15 elements	6 groups / 8 elements
Diaphragm blades	8		9	8
Closest focusing distance	12" / 310mm		11.88" / 302mm	35.43" / 900mm
Max. magnification	1:1			0.14x
Diagonal viewing angle	24°		23.4°	24°
Weight	1.43 lbs / 650g	1.32 lbs / 600g	1.38 lbs / 625g	1.01 lbs / 460g
Maximum diameter	2.95" / 75mm	3.1in / 79mm		2.95" / 75mm
Length	4.15in / 105.5mm	4.7in / 119mm	4.8in / 122mm	2.89in / 73.5mm
Filter diameter	52mm	58mm	67mm	58mm
Accessories
Lens hood	-	ET-67	ET-73	ET-65 III
Case	LP816	LP1219
Retail information
Release date	1990	2000	2009	1991
Currently in production?	No	Yes

EF100 f/2 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 information available on the 1991 launch of this lens.