the convertable protars series vii do cover quite a bit when used as a convertable--the indivudual cells cover much more than the double protar set

the smallest protar vii that covers 11x14 is the 690/480 combo to 330 (I believe)...the combined cells JUST cover 11x14 and the other 2 cells used along have coverage to spare---like the 690 has super huge coverage....any other protar set smaller than that combo and the combo won't cover 11x14 but the individual cells may...check cameraeccentric for the zeiss protars or b and l protars...they have tables in them.