Interview with Andrew Stockman and Andy Rider.

Interview with Andrew Stockman and Andy Rider.

From Color Mentor by Paul Hanrahan

March 28, 2026 · 1h 43m · Episode 14

About this episode

In this episode, Paul Hanrahan interviews Andrew Stockman and Andy Rider about their research on color matching functions and its implications in the film industry.

In this episode I chat to Andrew Stockman and Andy Rider. Andrew is the Steers Professor of Investigative Eye Research and Andy is a Senior Research Fellow in the same Institute of Ophthalmology at University College London. They have been responsible for lots of the research into redefining the color matching functions for the standard human observer since the early 2000’s. The Luminous efficiency functions and then updating the LMS cone responses. Their work has formed the basis for the new standards adopted by the CIE, and has a lot of crossovers with the film industry and they regularly attend events discussing narrow band displays and observer metamerism failures. We chatted at length about the implications of their work. I also had the pleasure of attending Andrew’s presentation at the AIC 2025 conference held in Taipei. Andrew’s UCL website, where you can find the new CMF's: http://www.cvrl.org/ We discuss: (00:00) - Start. (00:47) - Introduction. (01:55) - Interview starts. (03:02) - Updating the standard human observer. (06:15) - Early cone research and standards. (08:52) - Measuring photopigments. (11:01) - Method of cone sensitivity measurement. (14:30) - Color…

People in this episode

Host: Paul Hanrahan

Guests: Andrew Stockman, Andy Rider

Topics covered

  • color matching functions
  • investigative eye research
  • photopigments
  • narrow band displays
  • observer metamerism
  • vision science

Keywords

  • color matching functions
  • LMS cone responses
  • luminous efficiency functions
  • trichromacy
  • observer metamerism
  • photopigment measurement
  • vision as spatial information

Mentioned in this episode

Organizations: University College London, CIE

Places: Taipei

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