GRC 331 Midterm
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40 Terms
Who was Prokudin-Gorskii?
Sergey Prokudin-Gorskii was a Russian photographer and chemist who pioneered early color photography.
How did Prokudin-Gorskii capture color images before color film?
He used three black-and-white exposures through red, green, and blue filters and combined them.
What is the retina?
The light-sensitive layer at the back of the eye.
What is the fovea?
The tiny center area of the retina responsible for the sharpest vision.
What is the macula?
The larger central retinal area containing the fovea.
What is the difference between the fovea and the macula?
The fovea is a small part inside the larger macula.
What is the optic nerve?
The nerve that carries visual information to the brain.
What is the optic disk?
The blind spot where the optic nerve exits the eye.
What is the vitreous?
The clear gel filling the inside of the eye.
What are the hue angles on the color wheel?
Red 0°, Yellow 60°, Green 120°, Cyan 80°, Blue 240°, Magenta 300°.
What is the complement of red?
Cyan.
What is the complement of green?
Magenta.
What is the complement of blue?
Yellow.
What percentage of men have color defective vision?
About 8%.
What percentage of women have color defective vision?
About 0.5%.
What is the purpose of the ColorChecker SG chart?
Color calibration and profiling for accurate color reproduction.
What is the purpose of the WhiBal card?
White balance correction.
What lighting did we use for fine art photography?
D50 lighting.
What is a halftone?
Tiny dots that simulate tonal values using one ink color.
Why do we use screen angles in printing?
To prevent moiré patterns.
What inks are used in full-color printing?
CMYK — Cyan, Magenta, Yellow, Black.
What instrument is used for profiling?
A spectrophotometer.
What is a color profile?
A file describing how a device reproduces color.
What color space does Photoshop always use internally?
LAB.
Is Adobe RGB a real tangible thing?
No, it is a working color space.
What should you do when saving an image?
Embed a profile.
What are the sensors in the human eye?
Rods and cones.
What filters are used in tri-color photography?
Red, green, and blue filters.
What is the Bayer Pattern?
An RGB filter array over a digital camera sensor.
What is D50?
A 5000K standard viewing light.
What is ISO 3664?
The standard for viewing color and print evaluation.
What is the mnemonic for color complements?
"Red Corvette BY General Motors."
What RGB color space do we usually set in Photoshop?
Adobe RGB.
What CMYK color space do we usually set in Photoshop?
GRACoL.
How do we synchronize Adobe color settings?
Using Adobe Bridge.
What format should be used for commercial photography?
RAW.
What is a DNG file?
Adobe Digital Negative format.
What are the benefits of Camera RAW images?
More dynamic range, editing flexibility, and non-destructive editing.
What are the primary colors of light?
Red, Green, Blue.
What are the secondary colors of light?
Cyan, Magenta, Yellow.