Sigma 105mm f/2.8 EX DG Medium Telephoto Macro Lens for Canon SLR Cameras
Optimized for Canon digital SLR cameras but also compatible with film SLR cameras, the Sigma 105mm f/2.8 medium telephoto lens allows a greater working distance between the lens and the subject, helping it excel in all shooting ranges. The increased working distance of the lens is ideal when taking the picture of a flower among several branches, or an insect on a leaf. The narrow angle of view helps simplify the background, while the shallow depth of field makes it easier to handle the composition.
|Sigma 105mm macro lens on Canon DSLR
digial4047 photostream on Flickr
Canon Macro lenses come in several flavors, including Canon, Sigma, and Tamron. If you have not tried a Sigma lens on your Canon Digital SLR, this may be the one to get started with.
In addition to the great macro shots of insects and flowers, there are those who use this lens for some very specific applications, such as taking photos of dental work to document the dental repair process, dermatologists for the same reason, product shots of watches and jewelery, and many other work-related tasks that require accurate photos.
Here are a few of the comments from satisfied users:
The Techy Stuff:
- Focal length: 105mm
- Maximum aperture: f/2.8
- Lens construction: 11 elements in 10 groups
- Angle of view: 23.3 degrees
- Number of diaphragm blades: 8
- Minimum aperture: f/45
- Minimum focusing distance: 12.3 inches
- Maximum magnification: 1:1
- Filter size: 58mm
- Corresponding AF mounts: Canon
- Dimensions: 2.9 inches in diameter and 3.8 inches long
- Weight: 16.1 ounces
- Warranty: 1 year
Why consider this lens rather than a Canon 100mm Macro?
Main reason is economic – the Sigma costs less, but when you add in the fact that the Sigma 105mm Macro comes with a lens hood, that makes the price difference even more significant. All in all, the Sigma offers great image quality.
The main objection is the auto focus of the Sigma 105 Macro. There is no HSM (Sigma’s answer to Canon’s USM focus motor), and the lens tends to “search” for focus. It is quite slow in some (not all) focusing situations compared to the Canon 100mm macro.
Sample Photos with Sigma 105mm Macro for Canon (click on any image to view at full size)