The Digital Fact Book - Quantel

InternegativeAs a part of the chemical lab film intermediate process internegatives are created by contactprinting from interpositives. These very much resemble the cut negative. The stock isthe same as for interpositives: slow, very fine grain with a gamma of 1, and the developedfilm is orange-based. To increase numbers, several internegatives are copied from eachinterpositive. These are then delivered to production labs for large scale manufactureof release prints.See also: Film basics (Tutorial 2)Interocular distance (Stereoscopic)The distance between the centers of the lenses of two recording cameras. A typical distancewould be 63.5 mm (approximating average adult eye spacing).The term ‘interaxial’ is sometimes also used interchangeably with ‘interocular’ (when referringto eyesight, ‘interpupillary’ is often used).IInteroperabilityThe ability of systems to interoperate – to understand and work with information passed fromone to another. Applied to digital media this means video, audio and metadata from onesystem can be used directly by another. Digital signals may be originated in various formatsand subjected to different types of compression so care is needed to maintain interoperability.InterpositiveThis is a first part of the chemical lab intermediate process where a positive print of film isproduced from the cut (edited) camera negative. Interpositives are made by contact printingonto another orange-base stock. In order to preserve as much detail as possible from thenegative, including its dynamic range, interpositive material is very fine grain, slow and hasa gamma of 1. During the copying process, grading controls are used to position the imagedensity in the center of the interpositive material’s linear range. As a part of the process ofgoing from one camera negative to, possibly, thousands of prints, a number of interpositivesare copied from the negative.See also: Film basics (Tutorial 2)109