LEICA Leitz 90mm f/2.8 TELE-ELMARIT-M. Used condition shows normal signs of wear, optics are nice, no haze no fungus, no scratches. Here's a link to Ken Rockwell giving all the info on this lens.. Sample image taken wide open at 2.8 with natural light at 400 iso.I have used this lens on M6 and SL2 and it performs beautifully on either camera. Reluctant to sell it but funding another lens. Please feel free to reach out with any questions.