The 17-40 "L" is a stop slower than the 16-35mm f/2.8 L II, and that's basically the reason why it costs only half as much as its bigger brother. But otherwise there's not a great deal of difference between them. Some reviewers have found the 17-40 to actually be sharper at the wide end, and it may be less prone to lens flare. Either way, it's a great, sharp lens which delivers superb image quality and is a favourite of landscape photographers.
Sigma/N APO Tele Converter 2x EX DG £18.00
Not the most glamorous items in our range, but these tele converters will let Nikon users get more reach when they're using the Sigma 120-300mm f/2.8.
In total we have 141 copies of 57 different lenses.