Technical Data ST8.D
Content Inside: AGFA ST8.D optical sound recording film is a very high contrast, orthochromatic black and white film with extremely high definition and ultra-fine grain. The excellent properties of this sound recording film have been achieved by coating an extra thin emulsion layer on a clear polyester base of 125 m. A permanent grey antihalation undercoating (AHU) is coated between the emulsion and the base. An antistatic layer, which also improves transport in the sound camera, is coated on the back of the film. Exposure. Digital sound tracks: For the exposure of optical digital sound tracks such as Dolby SR.D, an adapted sound camera is used which exposes the analogue and digital tracks simultaneously. The optimum densities for the tracks are determined by making a series of density tests on the sound negative and a print. The densities, which give the best results with the users quality control system, are selected for full-scale production. For SR.D use, aim densities are less critical (the B&W patterns m ...
Source: www.agfa.com
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