Nikon Nikkor AF-S DX Micro 40 mm f/2.8G

This lens is as sharp as the katana! Reasonable priced, small and light weight, good close up to infinity and nice bokeh

AF speed is slightly slower especially during low light / dimmer condition

very sharp in the image center, borders and corners show very good resolution and no relevant vignetting when slightly stopped down

wide open some vignetting and in the corners not as sharp as in the center