28mm
AKA
Pathé Kok
Era
1912–1920
Format
analog
Developed by
Pathé
(Max) Capacity
1.36:1
Size
28mm
Perforations
3 (US: both sides, Europe: 1 side)
Frame size picture area
15 x 19mm
Fun facts
- This format had three perforations on both sides in the North American market, and only one on the left side in the European market
- This format used diacetate film stock, considered a safer alternative to flammable nitrate
- This format struggled to compete in the market against 9.5mm and 16mm film
