Polavision film is much denser (darker) than standard Super 8 because it uses an additive color process with RGB filter stripes.
This method is "tedious" and carries a high risk of damaging the rare film. 8MM SUPER 8 POLAVISION TRANSFER
Because the film was "instantly" developed inside the cartridge, it often contains dried-out chemical residue or "crystallized" emulsion that requires professional cleaning. DIY Transfer Guide Polavision film is much denser (darker) than standard