A film winder is a motorized accessory for analog cameras. It automatically advances the film after each exposure – instead of manually with a lever.

Winders typically operate more slowly and only advance the film once per exposure , while motor drives enable continuous shooting at multiple frames per second. Both serve to transport the film, but differ in performance and design.

Many analog SLRs from the 1970s to 1990s have a connection for a winder or motor drive – e.g., Canon A-series, Minolta X-series, or Nikon FM/FE models. Compatibility depends on the specific connection.