Used Mamiya M645 Standard Prism Finder | U8

The Mamiya M645 Prism Finder is a classic eye-level viewfinder designed for the original Mamiya 645 medium-format camera system. Featuring a high-quality optical pentaprism, it provides a bright, upright, and correctly oriented image for accurate framing and composition. Its approximately 0.74× magnification offers comfortable viewing, making it particularly useful for portrait, fashion, and handheld photography. The non-metered design requires no additional batteries and allows photographers to maintain full manual control over exposure settings. Its removable construction makes it easy to switch between prism and waist-level finders depending on shooting preferences. Whether replacing a damaged finder or completing a vintage Mamiya 645 kit, this accessory offers reliable optical performance and convenient eye-level operation.