If you’re interested in beginning a vintage lens collection from the ’80s and ’90s, the Helios 44 series is an excellent starting point, renowned for its stunning, large swirling bubble bokeh. The series encompasses several variants, each with its unique characteristics. I personally own the 44M, 44-2, and 44-4, all built with the goal of emulating the Zeiss Biotar lens. Overall, these lenses offer impressive quality and performance for the price, making them an excellent non-radioactive vintage lens option.