Activity › Forums › Sony Cameras › EX1R and FS7 – how to match? Sony Cameras EX1R and FS7 – how to match? Ed Mellnik replied 8 years, 8 months ago 8 Members · 11 Replies Ed Mellnik August 23, 2017 at 12:20 am I was looking at Used EX1R cameras… one had N50 on the bottom with the SS number. ANyone know what N50 means? EMA VIDEO Portland Oregon emellnik@emavideo.com Page 2 of 2 ← 1 2 Reply to this Discussion! Login or Sign Up Public All Members My Connections Only Me PublicAll MembersMy ConnectionsOnly Me Public All Members My Connections Only Me Reply to this Discussion! Login or Sign Up