John Hermanson
Well-known
35SP has a (large square) cds cell which is unique only to that model. New cells not available. Good news : it is rare to see an SP with a shutter jammed due to oily blades. 35RD uses a cell that can be substituted from other cameras. Bad news lots of RDs suffer from jammed shutters due to oily blades. 35RC, common cds cell, no oily blades. John, www.zuiko.com