Canon EF 100mm f/2.8 Macro USM lens

Infobox photographic lenses
name = EF 100mm Macro USM


maker = Canon
feat-is = n
feat-usm = y
feat-sbf = n
feat-macro = y
feat-special = 1:1 macro
type = p
application = Macro/portrait
flength = 100mm
fov = 1.0
aperture = f/2.8 - f/32
groups = 8
elements = 12
diaphragm = 8
close-dist = 12in / 310mm
max-mag = 1:1
weight = 1.32lbs / 600g
max-diameter = 3.1in / 79mm
max-length = 4.7in / 119mm
filter = 58mm
hood = ET-67
av-horiz =
av-vert =
av-diag = 24°
start = 2000
msrp =
category = Canon EF lenses

Canon's 100/2.8 Macro USM for the EF mount replaces an earlier lens which possessed the same specifications, but lacked the USM autofocus motor.

The 100/2.8 is a macro lens, meaning that it is capable of reproducing an object the size of the image sensor, known as 1:1 magnification. Despite the macro designation, the 100/2.8 can focus to infinity like regular lenses. As such, it is appropriate for use as a portrait lens.

Aside from the macro feature, the 100/2.8 Macro stands out among the 80 or so Canon EF lenses for its resolution and contrast. This should come as no surprise, because "macro lenses are among the best lenses there are for 35 mm format." [Cite book|title=The Camera|last=Adams|first=Ansel|authorlink=Ansel Adams|isbn=0821221841]

External links

* [http://www.usa.canon.com/consumer/controller?act=ProductCatIndexAct&fcategoryid=155 Canon's Official EOS Page ("Flash required")]
* [http://www.markusehrenfried.de/photography/canonef100mmf2.8.html Canon EF 100mm f/2.8 Macro USM] by Markus Ehrenfried. Including lens schematics and table for the depth of field.
* [http://www.fredmiranda.com/reviews/showproduct.php?product=47&cpage=3&perpage=15&cat=2 Fred Miranda review]
* [http://www.canon.com/camera-museum/tech/report/200004/table4.html Depth of Field data from Canon Technical Hall]

References