Product Description

The Canon EF 100mm f/2.8 Macro USM Autofocus lens is suitable for macro photography up to life-size (1x) magnification. Inner focusing affords a long working distance of 5.9 inches to infinity.

Product Details

• Brand: Canon
• Model: 4657A006
• Dimensions: 2.13" h x 2.13" w x 2.99" l, 4.00 pounds

Features

• 100mm macro USM lens with f/2.8 maximum aperture for Canon SLR cameras
• Secondary diaphragm blocks stray light at f/2.8 for increased contrast
• Ultra-sonic monitor provides outstanding autofocusing speed at all distances
• 3-group floating system for exceptional close-up performance; full-time manual focus
• Measures 3.1 inches in diameter and 4.7 inches long; weighs 21.1 ounces; 1-year warranty

Amazon.com Product Description
Bring small things into full-sized view with the Canon EF 100mm macro USM lens. Macro lenses can uncover detail that would be impossible to detect by the eye and give new perspective to extremely minute subjects such as insects or the petals of a small flower, and this lens is no exception. The lens offers such features as a three-group floating system for exceptional close-up performance; a secondary diaphragm that blocks stray light at f/2.8, which increases contrast when shooting wide open; a ultra-sonic monitor (USM) that provides outstanding autofocusing speed at all focusing distances; a wide manual focusing ring with smooth action; and full-time manual focus even in AF mode. The first lens in its class to feature inner focusing, the lens carries a one-year warranty.

• Focal length: 100mm
• Maximum aperture: 1:2.8
• Lens construction: 12 elements in 8 groups
• Diagonal angle of view: 24 degrees
• Focus adjustment: Inner focusing system with USM
• Closest focusing distance: 1 foot (film plane to subject)
• Filter size: 58mm
• Dimensions: 3.1 inches in diameter, 4.7 inches long
• Weight: 21.1 ounces

Customer Reviews

I LOVE IT!!!
All I have to say is-This lens will make photos limited only by my skill and imagination. Alright, I need to make more points than just that. This lens is the best for showing great details in your photos. It's amazing! However, why it didn't come with a hood?

Excellent for macro photography
Before making the decision to splash out on the Canon lens for my Canon EOS 400D (Rebel) I spent several months comparing reviews and opinions on various lenses. It came down to a choice between the Canon 100mm, the Sigma 105mm f/2.8 EX DG Macro and the Tamron 90mm f/2.8 Di Macro Lens. Each had its plus points but the general consensus of opinion consistently favoured the canon.

I do not regret my choice. For close-up work the 100mm lens is a considerable improvement over the standard 18-55mm lens, and for macro it is excellent. Best results are achieved when using full manual settings, and I find the lens performs at its best roughly between f8 and f22.

Using the lens as a standard telephoto I am not yet convinced, certainly when using it hand held. It is quite a heavy piece of equipment and I find camera shake a problem, but used with a tripod the results are good. But I am not too worried about this as it was primarily for macro photography that I wanted the lens, and on this basis I do not regret my choice.

Great value but slow to focus.
This is a wondferul lens with great sharpness and color. I have owned two over the years and have been very happy with them with the quality of construction and reliability. What makes me even happier is it is a great value since it can be purchased for less than $500 now. The only issue that I have is that due to its age, the lens is somewhat slow to focus compared to my newer lens. I would still recommend this as a great buy, regardless.