Sigma 2x APO DG Converter (Nikon AF)
2x converter lens designed for digital SLR’s featuring the DG multi layer lens coating and lens design to reduce flare and ghost, and also creates an optimum colour balance through the entire zoom range.Lens construction: 6 elements in 5 groupsFocal length: 2xAperture coupling range: f/2.8 - f/32Reproduction ratio: 2xDimensions: 68.5 x 52mmWeight 234g