I had bought a couple of old ‘Wray’ brand enlarger lenses for use with Infra-red photography. I have 2 lenses: a 3.25inch (83mm) f4.5 and a 4.25inch (108mm) f4.5inch. This post shows some of the results:
I am pleasantly surprised at the quality of these old (vintage?) lenses. I did note that contrast was low in the monochrome image of the flower petals but this is not surprising as the 950nm filter showed almost all the plant material as white.