So my grandfather was showing me some of his, and my great grandfathers old camera equipment when he found out I am a photobug and he gave me it to toy around with. I am wondering if any of this (assuming it is in working condition) is worth using? There is an Exakta VX with a Schneider-Kreuznach Xenon 50mm f/2, a Schneider-Kreuznach Xenar 135 f/3.5, An Exackta VXIIa with a Steinheil München Auto-Quinaron 35 f/2.8, a C.Z. Jena Biotar 58 f/2, and a very interesting looking ISCO-Göttingen Westrogon 24mm f/4. Some kind of a rangefinder says: TOWER with a Color Luna 45mm f/3.5, doesn't appear to be in a functioning state, a Canonet 28 with a 40mm f/2.8 Also there were a couple minolta lenses included though no Minolta camera body, perhaps he has one lying around still? A Rokkor 58mm 1.2, No name on it? 35-105mm f/3.5 zoom lens text reads "MC AUTO ZOOM", Vivitar 90-230mm f/4.5. If anyone has any information on this that would be greatly helpful on if it is worth using really. For the record I am not looking to sell any of this if that is what you are wondering. I could never bring myself to sell my great grandfathers and grandfathers equipment. Google has given me some advice, but I would like to know as much as possible about all of this stuff, in particular the Exakta bodies and lenses. Thank you in advance! Chris.