|EF||Autofocus lens designed both for Canon full frame and APS-C SLR cameras.|
|USM||The lens is equipped with ultrasonic motor to provide very fast and virtually silent autofocus. Learn more|
|MACRO||Macro lens. Designed for close-up photography.|
|Position in the lineup|
|Canon EF 100mm F/2.8 Macro USM||1:1||Mar 2000||⊗|
|Canon EF 100mm F/2.8 Macro||1:1||Apr 1990||⊗|
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|Maximum format:||35mm full frame|
|Diagonal angle of view:||24.4° (35mm full frame)|
|19.3° (Canon APS-H)|
|15.5° (Canon APS-C)|
|Lens construction:||12 elements in 8 groups|
|Number of blades:||8|
|Closest focusing distance:||31 cm|
|Closest working distance:||14.7 cm|
|Magnification ratio:||1:1 at the closest focusing distance|
|Type of autofocus motor:||Ultrasonic (Canon EF)|
|Full-Time Manual Focus:||Yes|
|Maximum diameter x Length:||Ø79 x 119 mm|
|Materials:||High-quality plastic barrel|
|Filter size:||58 mm|
Design and Features
The lens has entirely new optical design which differs from non-USM version (1990). Being a versatile medium telephoto lens, it can be used both for portrature and macrophotography with magnification ratio of 1:1 (without additional accessory). The lens offers larger working distance compared to Canon EF 50mm F/2.5 Compact Macro (1987), which is especially useful for shooting insects.
A macro lens is a lens optimized for shooting at distances much closer than normal lenses. Another feature of a true macro lens is the ability to provide the magnification ratio of at least 1:1 at the closest focusing distance. The magnification ratio of 1:1 means that the image of the subject formed on a camera sensor is of the same size as the subject in the real life. Almost all macro lenses with focal lengths of 90-180 mm (except for some older designs) are capable of “life-size” magnification. Macro lenses with focal lengths of 35-70 mm typically offer the magnification ratio of 1:2. “Life-size” magnification, however, can be achieved by the means of dedicated extension rings or close-up lenses.
The image quality of almost all macro lenses tends to be better than that of standard prime lenses, especially at close distances. Models incorporating a floating elements are also capable of providing consistently high image quality at the entire range of focusing distances from infinity down to the closest focusing distance.
Traditional lens designs, especially older models of macro lenses, move all optical elements as a whole while focusing: the lens barrel extends a considerable distance when the lens is focused at the closest distance. For example, if you need to focus a 90 mm macro lens to 1:1 magnification, the lens has to be extended an additional 90 mm from its position at infinity. This could result in the lens casting a shadow on the subject or even striking it. That’s why older macro lenses tend to focus no closer than 1:2.
Modern designs, including this Canon EF 100mm F/2.8 Macro USM, use internal or rear focusing, in which only the group of elements in front or behind the diaphragm moves during focusing. The overall length of a lens remains constant and the filter thread does not rotate during focusing. Internal focusing also contributes to fast and efficient autofocus. At the same time, internal or rear focusing and floating elements alter the focal length, decreasing it as focusing distance is reduced. For example, the effective focal length of Canon EF 100mm F/2.8 Macro USM is closer to 73 mm when focused at the minimum focusing distance of 0.31 m. Since the focal length determines the angle of view of the lens, sometimes you will need to reframe your subject after focusing.
Macro lenses with short focal lengths (50-60 mm) are cheap, compact and lightweight. However, the closest working distance of such lenses (a distance from the front of the lens to the subject) is too small for shooting insects, as the lens barrel is located too much close to the subject and can cast a shadow on it or even strike it. Macro lenses with long focal lengths (150-180 mm) are more expensive, bulky and heavier, but offer larger working distance. This gives you more room to position lighting and also reduces the chances of casting a shadow on a subject. But the most popular true macro lenses are those with medium focal lengths (90-105 mm), because they provide a good compromise between various lens characteristics and price.
It should be mentioned that most modern macro lenses offer autofocus, but due to a very shallow depth of field provided by every macro lens even at or near the minimum aperture, manual focusing is a way more reliable method of obtaining perfect focus.
Now back to the Canon EF 100mm F/2.8 Macro USM. The lens barrel is of moderate weight, made of high-quality plastic. The lens mount is metallic.
The lens features AF/MF focus mode switch.
|AF||Autofocus mode with Full-Time Manual Focus.|
|MF||Manual focus mode.|
The lens features focusing distance range limiter which allows to choose between the following focusing distance ranges:
|0.31 m - ∞||Full range of focusing distances.|
|0.48 m - ∞||Range of focusing distances suitable for shooting distant subjects.|
By setting the suitable focusing distance range, the actual autofocusing time can be shorter.
The lens uses front filters with standard size of 58 mm which are easy to find. They are also inexpensive.
The filter thread does not rotate during focusing which allows convenient use of different types of filters (including but not limited to polarizing and gradient).
The lens is equipped with ultrasonic motor, the autofocus is virtually silent and very fast.
The lens incorporates a floating system that provides correction of aberrations and ensures constantly high image quality at the entire range of focusing distances from infinity down to the closest focusing distance. Learn more
The sharpness is excellent at the center and very good at the edges of the frame already wide open.
|Camera:||Canon EOS 5D mark II|
|Sensor size:||36×24 mm|
|Vignetting at F/2.8:||-1.24 EV|
|User Manual. English, Adobe PDF, 307 KB|
|User Manual. Русский, Adobe PDF, 305 KB|
|Prime lenses for Canon EOS DSLR cameras|
Alternatives (AF, 88..112 mm)
|Canon EF 100mm F/2.8 Macro||1:1||1990||⊗|
|Canon EF 100mm F/2.8L Macro IS USM||1:1||2009||⊗|
|Sigma 105mm F/2.8 EX DG Macro||1:1||2004||⊗|
|Sigma 105mm F/2.8 EX DG OS HSM Macro||1:1||2011||⊗|
|Tamron SP AF 90mm F/2.8 Di Macro 1:1 272E||1:1||2004||⊗|
|Tamron SP AF 90mm F/2.8 Di Macro 1:1 VC USD F017||1:1||2016||⊗|
|Tamron SP AF 90mm F/2.8 Di Macro VC USD F004||1:1||2012||⊗|
|Tokina AT-X Pro Macro M100 AF 100mm F/2.8 D||1:1||2005||⊗|