This is the Canon EF-S 60mm f/2.8 Macro USM lens:
Visit Andy Sobanski’s fascinating galleries on insect macro photography, taken mainly with the Canon 50D.
There are a couple of full-resolution 60mm macro test pictures in this Japanese-language article at Impress (read it in English) which is a review of the Canon T3i. One of the photos was shot at f/2.8 wide-open aperture. Just use your browser to search for “EF-S 60mm” in the article. The EXIF data is self-explanatory.
Accessories and add-ons
The filter thread size on the 60/2.8 Macro USM is 52mm, which means you’ll want to be looking at purchasing 52mm filters.
Canon Lenses — Main page