Much of my photography is done at apertures wider than the f/22 that is the stan dard reference for lens coverage. Because I sometimes use quite a bit of tilt o r swing with the front standard, I have been looking for specs at wider aperture s (f/4.5-11). I am currently using a borrowed 150mm Symmar-S, which gives a lot of coverage, but I would prefer a 90mm or 75mm, which seem to offer only a smal l amount of extra coverage. Do you know where I can find (wide-aperture) covera ge specs for these focal lengths? Any help would be greatly appreciated.

Thanks!