Sigma 50mm Macro Lens f/2.8 D DG for Nikon, Fixed / Prime Very Sharp, V.G. Cond.

This macro lens is specially coated to get the best color balance while cutting down ghost caused by reflections from the digital image sensor. To maintain high optical performance from infinity to close-up 1:1 macro photos without accessories the Sigma 50mm f/2.8 EX DG incorporates a Floating Internal Focusing (FIF) system.

eBay