The Canon EOS-1N, released in November 1994, was Canon's flagship professional 35mm SLR that superseded the original EOS-1 with significant improvements including a 5-point autofocus system, enhanced weather sealing, and expanded exposure capabilities. The camera featured a rugged polycarbonate body without built-in flash (intentionally omitted for professional durability), 100% viewfinder coverage, and multiple metering modes including 16-zone evaluative and spot metering with shutter speeds from 30 seconds to 1/8000s. Optional power accessories like the PB-E1 Power Booster could increase the frame rate from 3 to 6 fps, while a specialized EOS-1N RS variant offered 10 fps shooting with a fixed pellicle mirror. The camera also served as the foundation for Canon's first digital SLRs through collaboration with Kodak in the late 1990s, before being replaced by the EOS-1V in 2000.