I am currently borrowing something you don't see every day - a Rodenstock APO Sironar-S 360mm f/6.8. For those of you who don't know, the APO Sironar-S's are the Leica optics in the Large Format world. Distinctly superiour contrast, resolution, and bokeh, compared to most lenses - with distinctly superiour prices!
The 360mm f/6.8 is the grand emperor of that line - by far the largest, heaviest, and most expensive. It covers 11x14in film easily, and takes 112mm filters!
My Linhof Technika is positively dwarfed by this beast, but I had to see what it renders like:
Once upon a tree (or three)
(360mm at f/6.8, Ilford HP5 developed in the kitchen sink, Linhof Technika V)
With a conventional camera for this sort of shallow-field-depth work (say, a full-frame camera with a 85mm f/1.4 shot wide open), one would have to pick having just the bottom-right in focus (or not). The focal plane control of the view camera allowed me to balance this composition in terms of fine detail (top-left vs bottom-right) without compromising the dreamy, abstract look I wanted by shooting wide open.
I absolutely adore B&W film for this type of work - no digital system could currently substitute.