I haven't tried yet, but there is Provia 400. I don't know how well that extra two stops would compensate for two less stops in aperture. I'll have to add that to my testing list. My original thoughts have been using LF for which there is no Provia 400 sadly. Next time I head out to the desert I'll try and do some Provia 400 at f/11 and see what happens compared to Provia 100 at f 5/.6 and the same scene.

-K