Hey everybody... I have a Soligor 135mm f/2.8 and I really love the format of the lens. I love the focal length, speed, and compact size combination, and mounted with the EC-14 it is the same size as my E.Zuiko 200mm f/4, with the same focal length and aperture. Unfortunately though, I didn't like the quality of the Soligor lens I have, and I have found many other 135mm f/2.8 lenses of different makes around town but none that stand up to my quality standards. I have never been let down by my OM Zuiko glass and also would like to try the Minolta Rokkor version, the Carl Zeiss Sonnar, or Vivitar Series 1 135mm f/2.3. If anybody has a good 135mm f/2.8 or similar format lens, please let me know! If you can shed any light on the performance of these particular lenses, I am also all ears. I could also go for the Vivitar 135mm f/2.8 close focus (1:2 macro) lens. Preferably in OM or MD/MC mount, but it doesn't have to be (especially if you have an adapter ).