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Canon EF 70-300mm f/4-5.6 IS USM

70-300_isusm
Review Date: Mar 27, 2012 Recommend? yes | Price paid: Not Indicated | Rating: 8 

 
Pros: the L optical quality
Cons:
rotating front lenses while focusing

- its price is just;
- sharp and clear images with no colour aberrations;
- the two way Image Stabilization system allows panning
- I use it in a Canon 50D so with its crop sensor (1.6 crop) the 300mm equals a real 480mm tele;
- not easy to use a Circular Polariser filter due to the rotation of the front lenses while focusing ... but there is an obvious turn around method - focus first and adjust the adequate polarising effect afterwards;
- with the original Canon hood we have no easy access to the Polariser but for some extra money a rubber retractable hood the problem is solved.


just an example ...
http://cgiraldez.deviantart.com/art/free-as-a-bird-269889147


 
Canon EF-S 10-22mm f/3.5-4.5 USM

EF10-22
Review Date: Mar 27, 2012 Recommend? yes | Price paid: Not Indicated | Rating: 9 

 
Pros: razor sharp images with quite small distortion at its widest 10mm
Cons:
---

... not cheap but we must pay for its undoubted L quality

... precise, fast and silent focusing

... light weight

... no vignetting if slim good quality filters are used ( B+W or Hoya Pro 1 )

... no IS ... but the tests in low light or indoors with no speed-light on my Canon 50D ... show crystal clear and sharp images

... what a wonder for landscape and for indoors