A Human Vision Primer for Photographers
Posted in Color Science on Dec 31st, 2007
A Human Vision Primer for Photographers
Archive for the 'Color Science' Category
CurveMeister 3
Posted in Color Science, Extremely Extreme Photoshop on Dec 30th, 2007
Mike Russell’s CurveMeister, v3, is simply incredible.
sRGB vs. aRGB in Photographic Output
Posted in Color Science on Dec 28th, 2007
The conclusion to draw from these admittedly anecdotal tests is shockingly obvious: Processing within the aRGB Working Space apparently produces significant advantages.
A Cooperative Investigation using GamutVision and Curvemeister
Posted in Color Science on Dec 21st, 2007
In fact, when the aRGB image is mapped to an example output profile (in this case, a Canon i9900 dye ink printer profiled with Ilford Galleria Classic Gloss media…a very competent combination), the displacement of those saturated colors is profound.
Delta-E
Posted in Color Science on Oct 8th, 2007
Δ-E is essentially nothing more than the difference between two colors. It’s a mathematically derived product that represents a physical distance between two numbers in a Gamut. You already know what a Gamut is. Since we’re talking about a three dimensional distance from a point, you may have already recognized that Δ-E manifests as a [...]
Metamerism
Posted in Color Science on Oct 3rd, 2007
In photometry, colors that have a similar visual character as sensed by a normalized human eye, but actually have differing spectral componentry are referred to as “Metamers.” If you are frustrated by the apparent colors of your prints varying under different kinds of lighting, it is possible that you are afflicted with Metamerism.
Color Temperature
Posted in Color Science on Oct 2nd, 2007
If you are a professional photographer it is absolutely necessary that you understand Color Temperature in order to manipulate or compensate for it.
Gamut Conversions
Posted in Color Science on Sep 19th, 2007
A Gamut (or “Color Space”) is simply a three-dimensional volume of colors that represent the entire set of colors that is either used as a reference volume or describes the capability of a piece of hardware (e.g. a monitor or printer).
More on Gamma!
Posted in Color Science on Sep 19th, 2007
Check this exceptional Gamma FAQ by Charles Poynton. Please take special note of the very last point concerning .jpg compression and its intent concerning Human Visual Acuity.
Profiling Cameras: The Application in Handheld Aerial Photography
Posted in Color Science on Sep 10th, 2007
In the past several months there has been a marked increase of interest and noise concerning camera profiling. This is a very positive trend-it demonstrates the aggressively expanding engagement of technical matters that only a few years ago were reserved for elite color labs and studios.