Nikon AF-S DX Micro Nikkor 40mm f/2.8G Macro Lens Nikon Lenses F mount JAA638DA. An excellent lens for close-up macro photography the AF-S DX Micro Nikkor 40mm f/2.8G reveals hidden beauty with true 1:1 performance for APS-C sensor Nikon camera s whilst rendering natural bokeh.. Nikon. JAA638DA. 018208022007