For sale is Sony 100mm f2.8 STF

One of the most unique lenses of the sony system. The STF design incorporates a apodization (APD) filter (a gradated ND filter) designed to give smooth bokeh. This would be ideal for someone who loves bokeh and appreciates there's practical issues with just buying lenses with crazy large apertures like f1.4, cost & weight aside there's a point there razor thin depth of field becomes impractical.  

Note because the lens in effect has a built in ND filter, the light transmission is cut by around 2 stops, so at f2.8 you have the the depth of field of a f2.8 but for exposure purposes it acts more like f5.6