AVIAN

Photoreceptors:

Receptor	Opsin λmax	Filter λmax	Filter λ50%	Recep. λmax
Blue	200nm	200nm	280nm	847nm
Red	200nm	200nm	280nm	657nm
Green	200nm	200nm	280nm	530nm

Opponent processes:

Description	(+) Terminus	(-) Terminus	Mode
Luminance	Red Green		Photopic
Deep Red-Green 657nm - 589nm - 530nm	Red	Green	Photopic
Far Red-Violet 749nm - 490nm - 418nm	Red Green	Blue	Photopic

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Notes and References:

Warrant E.J., Nilsson D.-E. (1998) Absorption of White Light in Photoreceptors. Vision Res., Vol. 38, No. 2, pp. 195-207. PII: S0042-6989(97)00151-X

Stavenga D., Smits R.P., Hoenders B.J. (1993) Simple Exponential Functions Describing the Absorbance Bands of Visual Pigment Spectra. Vision Res. 33(8) pp. 1011-1017. doi:10.1016/0042-6989(93)90237-Q

Note: Many species may have gaps in available data, which may be filled in with extrapolations from closely related species. The AVIAN website is copyright © 2011-2024 J. Gagnon. All rights reserved unless otherwise specified.

Animal Vision Interactive Analyzer

Digital "no IR" camera (Camera obscura)

Notes and References: