http://forums.dpreview.com/forums/read. ... e=21592528
17-55 IS lacks the sealing of the cousin Ls. I have a little dust in the lens but it's not affecting image quality. I try and keep the dust out. Got a HEPA filter for the office plus I'm going to add my IKEA cabinet lights to the storage unit to dehumidify.
As for QC - Photozone rested the 70-200/2.8 IS.
Final comments: "At this stage I will not provide a final verdict due a centering problem in the tested samples. Nonetheless I would like to note that the QC issues with image stabilization lenses (Canon or Nikon) are getting worrisome from a testing perspective."
http://www.photozone.de/8Reviews/lenses ... /index.htm
17-55 IS lacks the sealing of the cousin Ls. I have a little dust in the lens but it's not affecting image quality. I try and keep the dust out. Got a HEPA filter for the office plus I'm going to add my IKEA cabinet lights to the storage unit to dehumidify.
As for QC - Photozone rested the 70-200/2.8 IS.
Final comments: "At this stage I will not provide a final verdict due a centering problem in the tested samples. Nonetheless I would like to note that the QC issues with image stabilization lenses (Canon or Nikon) are getting worrisome from a testing perspective."
http://www.photozone.de/8Reviews/lenses ... /index.htm
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