Today Nikon joined the race to provide the top camera for London 2012. The firm's D4, available in the UK from February 16th for Nikon Professional Scheme Users, is firmly positioned to capture gold winning performances in eight months time. Despite having fewer pixels than Canon's latest flagship 1DX, Nikon is looking to cement the reputation its predecessor the D3 gained in Bejing in 2008. This afternoon I spoke to award winning sports photographer Russell Cheyne, (Sports picture of the Year 2000 and 2004). A long-time Nikon user he said he will not rush to get the first camera off the blocks but will wait for any bugs to be ironed out. However by July he reckons the camera will be well sorted for its run in Britain's biggest sporting spectacle for more than 60 years. Both cameras available to pre-order from Calumet.