I am extremely impressed by the Franscope lens and love the image they produce. The lens creates a flare in a very unusual and flattering way. The look is very warm; a golden yellow-orange colour with diagonal streaks that are a warm green.
I may have found my new favourite set of lenses, they have a unique character and feel. My machinist and engineering friends are impressed with your workmanship and machining.
These lenses turned out better than I dreamt this experiment would. The screw collar you designed for my lens works way better than I could have imagined.