Complex sentence: Unfortunately, cost concerns resulted in the use of plastic even in some of the operating components of its film advance and shutter mechanism, sleeve bushings in place of bearings, and plastic Delrin gears in place of metal ones.
Split into simpler sentences: Unfortunately, cost concerns also resulted in the use of plastic even in some of the operating components of its film advance and shutter mechanism. Sleeve bushings were used in place of bearings, and plastic Delrin gears in place of metal ones.