Hello,
I just bought a Schneider Symmar 150/265 convertable lens. You remove the rear element and get a so-so 265 mm lens. I haven't made any exposures yet, but noti ced that infinity focus with the 265 mm is way shorter than infinity focus on my 210 lens. Seems like a big difference given that one lens is two inches shorte r in focal length and yet focuses over an inch further down the rail.
I'm just curious. I know that lenses of different design have different focusin g distances, but I thought they were a lot more similar. Does removing the rear element make some kind of semi-telephoto?
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