The aluminum stepwedge is the standard tool for evaluating the dynamic range (latitude) of a digital or film-screen imaging
system. This wedge provides 11 steps in 3.2 mm increments. The number of distinguishable steps represents the dynamic
range of the system. Images may be evaluated visually or by using a densitometer.
The aluminum stepwedge is the standard tool for evaluating the dynamic range
(latitude) of a digital or film-screen imaging
system. This wedge provides 11 steps in 3.2 mm increments. The number of distinguishable steps represents the dynamic
range of the system. Images may be evaluated visually or by using a densitometer. The Gammex 117 Stepwedge provides
a useful means of comparing the characteristic curve of various film/screen combinations, mAs reciprocity, and if done very
carefully, sensitometry. Note: To increase accuracy when evaluating filmscreen systems, a sensitometric pattern should
be placed on the film immediately before processing.
SPECIFICATIONS
Construction . . . . 6061 Aluminum Alloy
Steps. . . . . . . . . Eleven (11) steps, 3.2 mm high and 12.7 mm deep
Dimensions . . . . . 14x6 cm (5.5x2.4 in)
Weight. . . . . . . . 450 g
Radiographic
Aluminum Stepwedge
Model 117
The aluminum stepwedge is the standard tool for evaluating the dynamic range (latitude) of a digital or film-screen imaging
system. This wedge provides 11 steps in 3.2 mm increments. The number of distinguishable steps represents the dynamic
range of the system. Images may be evaluated visually or by using a densitometer. The Gammex 117 Stepwedge provides
a useful means of comparing the characteristic curve of various film/screen combinations, mAs reciprocity, and if done very
carefully, sensitometry. Note: To increase accuracy when evaluating filmscreen systems, a sensitometric pattern should
be placed on the film immediately before processing.
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