The Canon EF 100mm f/2.8 USM Macro Lens is a very good choice for macro photography of butterflies, insects or flowers. It offers excellent optical performance and middle-of-the-road working distance, size and weight.

1; Fast Focusing - Utilizing USM (Ultrasonic Motor), the Canon 100 Macro internally focuses very fast, quietly and very accurately, 2; Non-Extending or Rotating - When focusing at 1x subject distances, the lens does not extend, and the front element does not rotate, 3.

1; Build quality - this USM Macro lens has a reasonable build quality although it's not quite as solid as the L-Series lenses, 2; Image Stabilization - this lens does not feature the image stabilization present with the significantly more expensive Canon EF 100mm f/2.8 L IS USM Macro Lens

This is my first macro lens. The choice was between the Canon 60mm 2.8 macro or this one. After much research and a sale price drop of $80 from OneCall, I chose this one. The sale price put the new price from OneCall in an acceptable range with an used one. I am glad I chose this one.

Consistent Output; Durable; Easily Interchangeable

Yes, I would recommend this to a friend

Fast / accurate auto-focus

if you want to shoot macro you need this lens, if you want to do portraits get this or the 100mm f2

sharp; good for macro and portraits

all other lenses aren't as good or as cheap as this one

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 required two lenses: a macro and a long portrait lens. I did not have the budget for both but have been blown away by the quality of this lens in both areas for a very modest price.

Super-sharp images

Slow auto-focus

I bought this lens as my first macro to go with my 600D and for me (having been away from SLR's for over 10yrs) it took a bit to get used to. We went for a spin in the Botanical Gardens during mostly sunny weather to test it out.

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.