step wedge

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step wedge

[′step ‚wej]

(graphic arts)

A series of tones in steps from white to black usually on film or a glass plate for testing purposes.

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References in periodicals archive ?

Optical density means were calculated based on the measurements taken in three different areas of each sample and on the fifth step of the step wedge (which corresponded to 5 mm).

Evaluation of the optical density of composite resins with the use of nanotechnology by means of intraoral radiographic system (CMOS)/Avaliacao da densidade optica de resinas compostas de nanotecnologia por meio de sistema radiografico intraoral (CMOS)

The films were exposed to an optical step wedge created by a software program built into the Kodak Dry View 8300 unit (Kodak, Rochester, New York).

Optical density changes in dry-processed films

If you are using a Stouffer 21 step wedge to verify the correct exposure time you want to see a clear step I and 2 with a visual step 3.

Crystal clear reproductions: optimizing process controls for the next generation diazo phototool films