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Canon EF-S 17-55 f/2.8 IS USM

l217_efs1755
Review Date: Jun 14, 2006 Recommend? yes | Price paid: Not Indicated | Rating: 9 

 
Pros: combination of focal range+IS+f=2.8
Cons:
price,wide open soft corners at 17-20 mm and blue color fringes at high contrast edges

First and most important: optical quality in the 17-40 mm at f=4.0 is at least on par with the 17-40/4.0L. Everything else is an addon.
Wide open in the range from 40-55 mm pictures are almost tremendous.
At the short end (17-20) corners are a little bit soft (f=2.8) and obviously benefit from stopping down. CA is less than with the 17-40/4L

My copy is currently at the Canon service center due to a strong backfocus on my 20D ( was working perfectly on my wifes 350D). The neverending story .....

Final words of wisdom: optical quality ist excellent ( some weakness wide open at 17mm in the corners). The combination of focal range, F=2.8 and IS is even better then excellent. It is a high quality workhorse.




 
Canon EF 70-200mm f/4L USM

ef70_200_4_1_
Review Date: Jan 20, 2005 Recommend? yes | Price paid: Not Indicated | Rating: 10 

 
Pros: sharpness,contrast,AF(speed and precision), colour rendition, build qualitiy AND price
Cons:
really none, although ....

mine had a terrible backfocus at 70-100 when I purchased it. I sent it in for calibration and now have something like a perfect telezoom

 
Canon EF 50mm f/1.4 USM

ef50mmf_14usm_1_
Review Date: Jan 19, 2005 Recommend? yes | Price paid: Not Indicated | Rating: 8 

 
Pros: very good from F=2.0 on, FTM
Cons:
quite soft 1.4-2.0: much CA wide open

its now my third copy of this lens. No. ! and 2 were incredible: AF was absolutely unreliable. No. 3 now is much better: AF hits perfectly in about 90 % of all shots with f=2.0.
Expect quite soft sharpness between 1.4 and 2.0. If you compare it to the EF 50/1.8 I or II, the 50/1.4 clearly wins at f=2.0. Stopped down there is not much difference.

Conclusion:

Best EF-Lens (50 mm) around f=2.0, FTM is very handy when you need to refocus.