ordered today:
Mitakon Zhongyi 20mm f/2 4.5x Super Macro Lens for Nikon F
Nikon F Mount/FX-Format
Aperture Range: f/2 to f/16
Magnification Range: 4.5x to 4x
Minimum Working Distance: 0.8″
Manual Focus Operation
Metal Lens Barrel
3-Blade Diaphragm