I have collected Perken son and rayment magic lanterns and lantern advertising slides for ten years or so now, and also aquired a very old rayments patent camera. Then saw a couple of cheap thornton pickards on ebay, which I also acquired. I did not have a clue how they worked. It was only when in an auction house I saw a 8 x 10 Marion on the counter, I looked through the ground glass and was mesmerized! I bought it and it has been a steep learning curve ever since. It has a wray 12 x 10 lens that came with it, and I have just purchased a quick acting cabinet portrait lens to try on it.
I have the Rockland tintype kit, I think the images are amazing, and today coated my first ten plates with AG Plus. My first exposure should be in the next couple of days, once I get my lens board back from the machinist. I'm a bit iffy with exposure times and the like, although I did get a cheap Weston iii and covered the sensor with blue film, as suggested. If anyone has any pointers in doing tintype it would be greatly appreciated.