The build quality of this lens is exceptional thanks to a tightly assembled combination of metal and - mostly - high quality plastic parts. Both zoom and focus ring operate smoothly. The lens is designed to survive in harsh conditions due to sealings against dust and moisture.

Yesterday saw some excitement among our Nikon readers with the launch of the new Nikon D800 DSLR – but also announced yesterday were 3 new lenses from Canon. The main one of interest is the EF 24-70 F/2.8L II USM.