ISO 2907:2002

INTERNATIONAL ISO
STANDARD 2907
Third edition
2002-08-15
Cinematography — Maximum projectable
image area on 35 mm motion-picture film —
Position and dimensions
Cinématographie — Surface maximale projetable pour une image sur film
cinématographique 35 mm — Position et dimensions

Reference number
©
ISO 2002
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Foreword
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ISO 2907 was prepared by Technical Committee ISO/TC 36, Cinematography.
This third edition cancels and replaces the second edition (ISO 2907:1984), which has been technically revised.

INTERNATIONAL STANDARD ISO 2907:2002(E)

Cinematography — Maximum projectable image area on 35 mm
motion-picture film — Position and dimensions
1 Scope
This International Standard specifies the maximum dimensions of the film image area intended for projection from a
35 mm motion-picture film and the position of this area relative to the perforations and the reference edge of the
film.
This International Standard specifies three types of image areas intended for theatrical projection (see A.4 in
informative annex A):
 Style A: general theatrical release prints commonly referred to as non-anamorphic or wide screen;
 Style B: theatrical release prints with an anamorphic image;
 Style C: classic theatrical prints.
2 Position and dimensions of image area
The dimensions shall be positioned as shown in Figure 1, and as specified in Table 1.
NOTE 1 Dimensions B, D, and E define the image area on the film that is available for projection. They do not define the
opening in the projection-aperture plate. The size of this opening may differ from dimensions A and B, for example, because of
the physical separation necessary between the aperture plate and the film to avoid scratching the film, the slant of the marginal
rays accepted by the projection lens, etc.
NOTE 2 It is recognized that, in many cases, the actual film image area that is projected may be smaller than the projectable
maximum and, in some cases, may be non-rectangular (for example, an irregular four-sided figure bound by either straight or
curved lines). Such departures may result from the following:
 equipment considerations, such as slight inconsistencies among lenses, screen sizes, etc.;
 geometric limitations, such as the screen surface being at an angle other than 90° from the projection axis, or being non-
planar or both;
 aesthetic considerations, such as pictorial composition within more restrictive image limits.
In the absence of specific instructions to the contrary, it is intended that the actual projected film image area be the
largest appropriately shaped figure that can be inscribed within the specified dimensions.

Key
1 Film image area
2 Projectable image area
3 Direction of film travel
4 Reference edge
View as seen through film towards lens.
F
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