16MM F2.5 CARL ZEISS LUMINAR LENS Manufacturer: Carl Zeiss Germany Type: Luminar Description: Macro Lens; Ultraphot System; exact focal lenght 16,1 mm; 1:2,5 apertur optimal correction at 14:1; 5...6mm object field diameter; distance betw. focal plane and front lens vertex: objectside: 10,1mm, imageside: 11,5mm Focal Lenght: 16 Aperture: 2.5 ApertureRange: 1/2/4/8/15 Magnification: 10~40 Mount: ..