As someone passionate about film photography and having used Contax, Mamiya, and Pentax medium format cameras, I can share some personal insights that might help clarify this common debate. Each brand brings something unique to the table. Contax cameras are known for their superb lens quality and robust build, favored by photographers who appreciate sharpness and contrast in their images. The lenses, especially from Carl Zeiss, are remarkable, making Contax a great choice for portrait and landscape photography. Mamiya, on the other hand, offers versatility with interchangeable lenses and backs, which is perfect for photographers who want flexibility in their shooting style. Their cameras generally provide a great balance between image quality and handling, making them popular among studio and on-location photographers. Pentax 645 is celebrated for its ergonomic design and ease of use, which is especially appealing to those transitioning from 35mm systems. It offers modern conveniences like metered prisms and autofocus in some models. This makes it a strong contender for wedding and event photographers who need reliable and quick operation. In choosing between these, consider what kind of photography you want to pursue and what features matter most to you—be it lens availability, camera handling, or system versatility. I’ve found that trying each in person, if possible, provides practical insight beyond specs and reviews. Ultimately, these medium format cameras all excel in producing stunning film quality images. Your final choice will depend on your shooting style, budget, and personal preference. Exploring online communities, renting gear for test shoots, and reading user reviews can also guide your decision effectively.