The Sigma 18-35mm f/1.8 DC HSM has garnered a huge amount of interest from our readers, as the fastest zoom lens ever made for SLRs. UK residents can now win one courtesy of Sigma UK's latest competition, along with a two day landscape photography workshop in Dartmoor with pro photographer Lea Tippett. For a chance of winning, submit your best landscape photo, along with 80 words saying how you'd benefit from the workshop. The closing date for entries is 31st July 2013: click the link below for full details.