I need some help to "ID" a filter ( B+W 55E KR 1,5 1,1x ) that I picked up on a dead Canon AE-1 body mounted with a cloudy 50/1.8 SC at my local French thrift shop.
I know "zero" about B+W, and I have quickly ID'ed via the 'net that it's either a UV or a Skylight, but not sure here ... obviously it's a 55mm diameter.
Could someone knowledgeable please enlighten me? ... and as the Frecnh say, "Merci d'avance!"