That J-3 that Gabriel is using is from the first batch that I bought to take apart. The J-3 had such a horrible reputation for inconsistent results that I wanted to determine the cause. So I bought 5 lenses to experiment with. The one used for the above photo is made from the best parts of two lenses, neither was usable when I received them. As it turns out, years later, it is one of the sharpest J-3's that I've ever seen.