A Tutorial on Photometric Dimensions and Units

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: orig-research
Abstract: Numerous units are used to measure light, representing a variety of photometric dimensions. In the study of image capture, reproduction, and display, the differences between these various dimensions are important but often a source of confusion. This tutorial enumerates and describes these dimensions and their corresponding units and explains their appropriate applicability and usage. These dimensions include luminous energy, luminous power, luminous intensity, illuminance, luminance, and luminous exposure. The Système International d’Unités (SI) base unit candela is explained, and the derivations of the SI units for the other photometric dimensions are described. An example is provided for the case of sunlight.
Publication Date: 2015-07-01
DOI: 10.5594/j18576
Link: https://doi.org/10.5594/j18576
Author(s): George H. Joblove

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George H. Joblove; A Tutorial on Photometric Dimensions and Units, SMPTE Motion Imaging Journal ( Volume: 124, Issue: 5, July 2015); SMPTE, 2015. Available at https://doi.org/10.5594/j18576

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George H. Joblove; A Tutorial on Photometric Dimensions and Units, SMPTE Motion Imaging Journal ( Volume: 124, Issue: 5, July 2015); SMPTE, 2015. Available at https://doi.org/10.5594/j18576

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George H. Joblove; A Tutorial on Photometric Dimensions and Units, SMPTE Motion Imaging Journal ( Volume: 124, Issue: 5, July 2015); SMPTE, 2015. Available at https://doi.org/10.5594/j18576

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<span class="citation">George H. Joblove; <cite>A Tutorial on Photometric Dimensions and Units</cite>, SMPTE Motion Imaging Journal ( Volume: 124, Issue: 5, July 2015); SMPTE, 2015. Available at <a href="https://doi.org/10.5594/j18576" target="_blank" rel="noopener">https://doi.org/10.5594/j18576</a></span>

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George H. Joblove; A Tutorial on Photometric Dimensions and Units, SMPTE Motion Imaging Journal ( Volume: 124, Issue: 5, July 2015); SMPTE, 2015
doi: 10.5594/j18576
url: https://doi.org/10.5594/j18576

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George H. Joblove; <cite id="bib-10-5594-j18576">A Tutorial on Photometric Dimensions and Units</cite>, SMPTE Motion Imaging Journal ( Volume: 124, Issue: 5, July 2015); SMPTE, 2015
<span class="doi">10.5594/j18576</span>
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