Thank you for the tale. First one I’ve ever read. They are fantastic 😳
Some useful info with the “Therefore, green to yellow focus positions that humans use for focusing and the violet focus position must all be the same. What's more, good aberration compensation throughout the entire visible spectrum is necessary for color enlargements. As a result, EL-Nikkor lenses were designed with consideration of a broad range of wavelengths, from near ultraviolet at 380 nm to near infrared at 700 nm.” popping out.
My version of the lens it’s the one with metal barrel