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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 22 — Oct. 26, 2009
  • pp: 20211–20220

The absolute sensitivity of digital colour cameras

Fred Sigernes, Margit Dyrland, Nial Peters, Dag Arne Lorentzen, Trond Svenøe, Karsten Heia, Sergey Chernouss, Charles Sterling Deehr, and Mike Kosch  »View Author Affiliations


Optics Express, Vol. 17, Issue 22, pp. 20211-20220 (2009)
http://dx.doi.org/10.1364/OE.17.020211


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Abstract

A new and improved method to obtain the average spectral pixel responsivity and the quantum efficiency of Digital Single Lens Reflex (DSLR) cameras is outlined. Two semi-professional cameras, the Nikon D300 and the Canon 40D, are evaluated. The cameras red, green and blue pixel responsivities and quantum efficiency are retrieved by illuminating an integrating sphere with a wavelength tunable monochromator. 31 intensity calibrated monochromatic spectral lines from 4000 to 7000 Å, with a bandpass of ~12 Å, were used as a library to solve the main equations of observation for the cameras. Both cameras have peak sensitivity in the blue and minimum sensitivity in the red. The Canon 40D has blue and green channel sensitivity close to the Nikon D300. The Canon red channel has half the sensitivity of the Nikon camera.

© 2009 OSA

OCIS Codes
(120.4800) Instrumentation, measurement, and metrology : Optical standards and testing
(300.6550) Spectroscopy : Spectroscopy, visible
(350.0350) Other areas of optics : Other areas of optics
(350.6090) Other areas of optics : Space optics
(150.1488) Machine vision : Calibration

ToC Category:
Imaging Systems

History
Original Manuscript: August 26, 2009
Manuscript Accepted: October 6, 2009
Published: October 21, 2009

Citation
Fred Sigernes, Margit Dyrland, Nial Peters, Dag Arne Lorentzen, Trond Svenøe, Karsten Heia, Sergey Chernouss, Charles Sterling Deehr, and Mike Kosch, "The absolute sensitivity of digital colour cameras," Opt. Express 17, 20211-20220 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-22-20211


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