AF-S Nikkor 40mm F2.8 Micro specifications
Minimum Aperture• f/22
Angle of View on DX• 38°50’
Number of Elements (Groups)• 9 elements, 7 groups
Minimum focus distance• 16 cm (6.4")
Reproduction ratio• 1:1
Aperture Diaphragm Blades• 7
Filter Thread• 52mm
Size• 6.4 cm wide x 6.9 cm long (2.5" x 2.7")
Weight• 280g (9.9 oz)