Armin, I use both the 35 and the 55 Apo-Grandagon on an Arca-Swiss F-Metric 6x9 for architectural photography. I find I need the filter virtually always for the 35 mm lens, but only rarely on the 55. That said, because I usually shoot transparencies and occasionally run into subjects that are highly revealing of density variations, I wouldn't be comfortable working without having the Center Filter in my kit, even for 6x9. It is my most heavily used lens, and a wonderful design. See also: http://hv.greenspun.com/bboard/q-and-a-fetch-msg.tcl?msg_id= 005OMt
Bookmarks