I liked 28 mm lenses a lot when I still shot film. Back then 20-28-50-105 seemed the perfect set of primes for me, although I would have liked a 15 mm in additions as well back then. Out of reach budgetwise however 🙂.
These days I do use 24 mm instead, but I guess that is really because of the TS-E, and the fact there is no 28L 🙂.
BTW, the lens design and its elements are quite different from anything I have seen before. Just below the MTF-chart is the lens design. Rather weirdly shaped front lenses, molded asphericals. It looks like an inside out Tessar with a couple of lenses for the wide angle view.
