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Updated: Aug 14, 2026

A Standardized Approach to Extra-Oral and Intra-Oral Digital Photography
Published on: July 22, 2022
Characteristics of Kodak Insight, an F-speed intraoral film
1Department of Diagnostic Sciences and General Dentistry, University of North Carolina at Chapel Hill, USA. jbl@email.unc.edu
Objectives:
This study reports film speed, contrast, exposure latitude, resolution, and response to processing solution depletion of Kodak Insight intraoral film.
Methods:
Densitometric curves were generated by using International Standards Organization protocol. Additional curves were generated for Ultra-speed, Ektaspeed Plus, and Insight films developed in progressively depleted processing solutions. Eight observers viewed images of a resolution test tool for maximum resolution assessment. Images of an aluminum step-wedge were reviewed to determine useful exposure latitude.
Results:
Insight's sensitivity in fresh automatic processor solutions places it in the F-speed group. An average gradient of 1.8 was found with all film types. Insight provided 93% of the useful exposure latitude of Ektaspeed Plus film. Insight maintained contrast in progressively depleted processing solutions. Like Ektaspeed Plus, Insight was able to resolve at least 20 line-pairs per millimeter.
Conclusions:
Under International Standards Organization conditions, Insight required only 77% of the exposure of Ektaspeed Plus film. Insight film provided stable contrast in depleted processing solutions.
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