Not sure how to identify the actual part; in this case it is the small ring mounted on the front of the lens that has the lettering "VOIGTLANDER COLOR-SKOPAR 35mmF2.5". It unexpectedly fell off while using it on a brief photo walk and fortunately I found it before someone stepped on it. Anyway, it appears to have been attached to the lens body by three small spots of glue. Any suggestions on what type of glue to use to fix it? I am thinking contact cement but other suggestions welcome.
