Quote Originally Posted by BrianShaw View Post
If the landscape is compelling enough, some diffraction shouldn't matter too much.
Yes, and with a print size of 10", even f:22 would be just fine. That stop would give a diffraction limit of 69~ lp/mm, and a 4~x enlargement would mean 17~ lp/mm on the print, if the paper could resolve it. Those Xenars are very nice lenses.