I considered this for a long time as it's not cheap. I nearly settled for the 60mm macro lens but online reviews suggested that this was a bit more flexible. I've used it hand held for macro work in my garden so far and am really pleased with the results.

Consistent Output; Easily Interchangeable; Quick Focus; Sharp Focus; Strong Construction

Amazing quality, fast auto focus with some focus hunting depending if you are close to or a little out from the minimum focus distance to the subject. Other than that great feel, with helpful IS and focus limiters.

I loved this lens when I received it, I tested it straight away and the quality is superb. Whilst not having an image stabalizer I still enjoy using it manually. The Smifu service is 5 stars for me and the shipment was great as well as a very good price!

This is an extremely fun lens for those funniest photo ops where you want a close up and magnified image. It is also a nice portrait lens and I really enjoyed shooting some awesome portrait snaps using my 550D. I received this lens within 5 business days and it arrived nicely packed.

First I'd like to say that I checked out many different macro lenses before purchasing this particular lens. If I didn't have someone I could borrow from, I rented a lens from LensRentals.com. That being said here's my take on the lens.

"""So You Want To Major In Macro"" Then this is the Lens for you. I am absolutely in LOVE with this Lens! Crisp, Clear and to the POINT...This lens really promotes the beauty of Macro and affords me the opportunity to truly Explore my Passion for Macro Photography!!! Well Worth The Investment!!"

Super sharp images and saturated colors right out of the camera. The flower image accompanying this review was of a gooseberry blossom less than a half-inch long. If I had done more research, I would have noted the IS version of the lens, and probably gone for that, but I stick with a tripod almost...

This lens has blown me away. It is my first IS lens from Canon. I own a 85 1.2L and it is slow to focus and forget about hand hold as it has no IS. This 100 2.8L macro is super sharp, fast auto focus and accurate as well.

Consistent Output; Durable; Easily Interchangeable; Fast; Fast / accurate auto-focus; Hand hold with ease; Lightweight; Manual focus feels good; Manual focus override; Nice Bokeh; Rugged; Strong Construction; Very Sharp

NONE

I am a wedding photographer and this lens does a great job at details, like rings. It is so crisp, and you can get in close. It is great!

Consistent Output; Durable; Easily Interchangeable; Sharp Focus; Strong Construction

Heavy

I chose this lens over several more expensive models based on test reports, user reviews and, above all, price. While it may not have the build quality and weather sealing of those more expensive models, it still feels quite well built.