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The Rem-Jet (removable jet black backing) coat is a dispersion of lamp black (soot) in a binder of cellulous acetate phthalate. This binder is an “acid plastic”. It can be softened and washed away using an alkaline solution. Machine processing uses a pre-bath to temporarilly harden the film so it better withstands transport in a fast moving film processor. ...


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In case any of these actually isn't serviceable: Take them to bits, practice macro photography on the bits. Also keep all the hardware as spares - screws, washers, ball bearings etc used in cameras and lenses are often similar, and the actual bayonet mounts can be useful in improvising adapters. Speaking of adapters: Keep the lenses, or check what they are ...


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