The reason I like using lenses of this focal length is that it gets me closer to places that i can't get to normally. Take the image above, I was not able to get all that close to it and the 135 brought it to me. I saw what I wanted to get and this was the perfect lens for it. I also had the 100 f2.8 with me but that didn't get quite what I was after. I'm just wondering if the 135 f3.5 would have gotten me the same image. Probably not quite but it would be damn close. The perspective would have been the same but what about the aperture and that fern in the background.