Rummaging in the commodious barns I find another, this a Bell and Howell 5 inch 2.8, from an odd combination 8mm and filmstrip projector I stored away but, since I haven't used it in over 30 years I figure it's safe to steal the lens. This one goes in another scrap mount from a dead zoom, and with a tiny bit of trimming will go to infinity, but since the sun rarely shines here in January I can't test for interesting outdoor highlights. Here, however, is how it goes as a macro. Focused on a rail, with a little contrast and sharpening in post, this one isn't likely to displace the micro Nikkors any time soon, but it might work for portraits.