I was playing around with my 360mm Symmar-S MC and 240mm Componon-S and when removing the front element I found the resulting image very soft and pleasing - just like it is with convertible Symmars.
But I was wondering what focal length and aperture I was dealing with...
When I look at my 150mm Symmar Convertible the rear element has a focal length of 265mm/f12, so I guess it might result in a 636mm/f14 (something) for the 360mm and a 424mm/f12 for the 240mm.
Now I know the actual design of the lenses is different so the focal length may vary - but would those be good estimates? What about the aperture?
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