The contenders

Nikon AF-S DX 40mm f/2.8G Micro £260/$280 Tamron SP AF 60mm f/2 Di II LD (IF) Macro £350/$525 Sigma Macro 105mm f/2.8 EX DG OS HSM £360/$570 Nikon AF-S DX 85mm f/3.5G VR Micro £460/$525 Nikon AF-S 60mm f/2.8G Micro £530/$600 Tamron SP 90mm f/2.8 Di VC USD Macro £580/$650 Nikon AF-S 105mm f/2.8 G IF ED VR Micro £780/$900 Sigma APO Macro 150mm f/2.8 EX DG OS HSM £780/$1100