Tamron made a big impression on the market when they launched their SP 90mm F/2.5 back in 1979. Small, flexible and very sharp. It is originally designed for 35mm cameras (full-frame) but can also be used on APS-C cameras with an equivalent focal length of 135mm. It is a classic dual purpose 90mm macro lens. The lens manages to do a 1:2 magnification, almost macro and many call it for a macro lens although Tamron themselves did not do that and only talked about it as “a medium telephoto portrait lens”. (They called the previous versions, also with 1:2 magnification, “tele-macro” though.) Anyhow, it has long been the general opinion that it has very good close-up capabilities and it can do 1:1 macro with some help as we will see. It is also very suitable for use as a portrait lens at normal distances. The lens has been updated several times since its first release and changed look and optical formula during over 40 years of its existence. Each new version could have an additional feature, improved optical performance, just a cosmetic update, or a combination of them. We are going to look at the first AF version of this lens from 1990. The lens has been made with native mounts for Nikon F, Pentax K and Minolta/Sony A. I test a Nikon mount lens mostly on a FF mirrorless Nikon Z6 and APS-C DSLR Nikon D7200 (F mount) but I also include images taken with FF DSLR Nikon D600 (also F mount).