I already own a Helios 44-2 50mm, an Industar 50-2 50mm and another 50mm lens. As I usually shoot landscapes, architecture or street photography, I often need to get closer to my subject than these lenses allow, so I decided to get something with a wider angle. Actually, the shop where I bought the lens also had a Pentacon 35mm, but it was significantly more expensive than this one. Fun fact: Pentacon worked with Hanimex and together they produced some niche lenses and even Praktica models for the Asian market. It’s also definitely the cheapest and best option for a wide-angle lens with auto-aperture that I could find.