ISO-less?

Henry Gordon Dietz, Paul Selegue Eberhart

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

To determine the proper exposure, cameras generally use the concept of "film speed" - a number representing the film's sensitivity to light. For film, this number was a function of the emulsion and processing, changeable only in batches. However, digital cameras essentially process each shot individually, so most adopted the idea that the film speed of the sensor could be changed for each shot. The catch is that it isn't clear that the sensitivity of a sensor used in a digital camera can be adjusted at all: many digital cameras have been claimed to be "ISO-less," capable of producing similar images for the same exposure independent of the ISO setting used. This paper will present the results of testing the ISO-less behavior of various digital cameras, concluding with a simple proposal for how these results could be used to create a new paradigm for computing exposure and processing parameters.

Original languageEnglish
Title of host publicationProceedings of SPIE-IS and T Electronic Imaging - Digital Photography XI
EditorsRadka Tezaur, Dietmar Wuller, Nitin Sampat
ISBN (Electronic)9781628414943
DOIs
StatePublished - 2015
EventDigital Photography XI - San Francisco, United States
Duration: Feb 9 2015Feb 10 2015

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9404
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceDigital Photography XI
Country/TerritoryUnited States
CitySan Francisco
Period2/9/152/10/15

Bibliographical note

Publisher Copyright:
© 2015 SPIE-IS&T.

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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