The Konica Minolta pgBFL 116.5mm is a legacy cinema-grade DLP projector lens with a zoom function that allows for flexible throw distances and image sizes. Though designed for older digital cinema projectors, it was compatible with certain high-end models, including the Christie 25K series, providing high-quality, precise focus for professional installations. This lens is noted for its durability and was an integral component in large venue movie and presentation setups. The aperture and focal length specifications, often found in formats like 2.5/50.7-67.8mm or 4.5/35.2-51.6mm depending on the exact model, indicate its light-gathering capability and zoom range.