16mm Optical Sound Negative or Positive is available. McClear Digital in Toronto (416.977.9740) can transfer your original sound to either negative or positive 16mm optical sound. Black & White Film Factory (Toronto) can make 16mm Final Print (b&w neg or reversal or color reversal) with negative or positive sound. The sound quality is the same in any case, however it is not hi-fi (it is around 20Hz-14KHz ) and it could be done as Mono only. For sure less quality then 35mm sound (hi-fi, Stereo, Dolby SR), but this is the only way to get an optical sound in 16mm format these days.