Canon EF 24mm f/2.8 Wide Angle Lens for Canon SLR CamerasA^
  Publisher : Canon Company : Canon |
Features
- EF mount; wide-angle lens
- Inner focusing; floating system
- 24mm focal length
- f/2.8 maximum aperture
- Overall linear extension system with Autofocus drive
Product Description
24mm wide angle lens for Canon camerasCustomer reviews
not much choice 
by .. liquidhands (Sacramento, CA, USA)
This is a nice lens, relatively small, with decent resolving power (better at close distances)and a great,IMO, focal length for an 1.6 crop.
What I didn't like was that it is relatively slow for a fixed focal lenth at 2.8, it does not have full time manual focus, my 50 1.4 seemed to resolve (this is a subjective conglomerate of resolution and contrast) better at infinity focus. As far as small primes go, this is one of the few to chose from in this range (I like pentax's selection better), it is a good performer.
Note: I find the 28mm 1.8usm edge sharpness similar.
Soft under performing prime not even as good as a zoom 
by .. Grant Brummett (Arizona USA)
I can't change from 4 stars but if I could I would rate it at 2 stars.
I have since traded in this soft under performing prime it's not even as good as my two zooms my Canon EF 24-70 F/2.8 L and Canon EF-S 17-55 F/2.8 IS both blow it away in sharpness and contrast.
My advice, if you ever plan on buying a good F/2.8 zoom in this range then don't buy it. If you are on a severe budget it does out perform the 18-55 kit lens that came with my Rebel XTi but that's not saying much.
Pros:
Great price
Really small and light, tucks away in the corner of any camera bag
Fast auto focus that rarely hunts (slightly faster then Canon 50mm F1.8 but slower then Canon 17-40 F4 L)
Cons:
Wish it were F1.8 or faster
Soft under performing prime not even as good as a zoom
When the auto focus does miss the focus point it really misses
Auto focus sound doesn't last long and isn't really loud (louder then Canon 50mm F1.8) but reminds me of the sound of a drill
