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108 Cards in this Set
- Front
- Back
There are 5 ways to describe colour. A Pantone number is an example of an ________ colour. |
index |
|
What is the most useful colour measurement device for colour management purposes? |
Spectrophotometer |
|
True or False
Device dependent digital counts do not mean colour. |
True |
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CMY process inks are used in printing because they each subtract approximately ___/3 amount of the visible spectrum. |
1/3 |
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Brian tells you he wants to print a greenish blue background for his poster. Which method did Brian use to describe colour? |
Descriptive colour |
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The cells in human eyes that are sensitive to light and dark are known as _____ and the cells that are sensitive to colour are known as ______. |
rods cones |
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If you look at a LED light source through a diffraction grating (allows you to see the spectrum spread out) and hold up a magenta filter between the light source and the grating, what part of the spectrum would go missing? |
Green |
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True or False
Densitometers measure light absorption which is correlated to ink film thickness. |
True |
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Device independent colour descriptive method could also be known as ___________________. |
colourimetric |
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Measurement of a press sheet is an example of which of the 4 C’s of colour management? |
Characterization |
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The small xy in xyY values define the ______ and ____________ of colour. |
hue and saturation |
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Assuming a D50 light source and a standard observer, what is the approximate colour of the spectral reflectance graph shown here? |
Medium Green |
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What is metamerism? |
Two colours that look the same under one illuminant but different under another |
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In colourmetic colours, Tristimulus values can also be known as _____ . |
XYZ values |
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Very _________ colours are the opposite of neutral. |
vibrant |
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True or False
In a closed-loop colour management system each device in the system has to be tested and compared to every other device in the system |
True |
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What does PCS stand for? |
Profile Connection Space |
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ICC is an example of what kind of colour management system? |
Open Loop |
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RGB is a set of digital counts usually from 0 to ____ (#) in three channels: red, green and blue. |
255 |
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True or False
If you want to be able to use an ICC Profile in a program like Photoshop you should place it on the desktop of your computer. |
False |
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The Y in xyY values refers to the __________ of a colour. |
lightness |
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How many colour combinations are there in the additive colour theory? |
RGB - 16.6 million combinations |
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In the human eye, light enters through the __________ before being focused by lens into the retina. |
cornea |
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What are the 3 parts to the human visual system? |
eyes, optic nerve, brain |
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When someone is has protanopia or deuteranopia, they can not see colour between the _____ and _______ |
red and greens |
|
True or False
The gamut volume of an ICC profile reported by ColorThink Pro is the number of colours that device can reproduce. |
False |
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What type of cone cells are sensitive to blue wavelengths? |
short cones |
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One way to determine colour _________ is to use the Famsworth-Munsell 100-Hue test. |
aptitude |
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Viewing booths try to simulate _____ lighting using fluorescent tubes. |
D50 |
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Describe chromatic adaptation. |
When your eye adapts to see the brightest and most neutral object in your field of view as white and adjusts the perception of all colours relative to that white. |
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A Delta E less than ___ (#) is an average value for sheetfed press. |
5 |
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Colour management is linking the desired colour to the method of producing it in a ____________ and _______________ way |
controllable and predictable |
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What is the first international print standard? |
SWOP 1977-2003 |
|
True or False
Printing is no longer an art form, it is a manufacturing process. |
True |
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What is the equation for Delta E? |
ΔE = sqrt[(L-L)^2 + (a-a)^2 + (b-b)^2] |
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__________ ICC profiles are used for presses and inkjets printers. |
output |
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What type(s) of ICC profile does not have a PCS but converts from device count to device count? |
device link profiles |
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The colour temperature of monitors have a white point with higher temperatures are more _______ (colour) |
blue |
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_____________ ICC profiles are used for complex printing with spot colours and nonCYMK inks. |
N-channel profiles |
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What does LUTs stand for? |
Look Up Tables |
|
True or False
Only some devices are subjected to drift. |
False
All devices |
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Flourescent tubes use a lot of power and have odd spikes in _______ (colour) wavelengths. |
green |
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Scott sends you 5 RGB images of his dog to be converted to CMYK. You want to maintain the detail of the photo. What rendering intent do you use? |
perceptual |
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What type(s) of ICC profile only uses RGB device counts? |
monitor profiles and input profiles |
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The 4 press variables that affect consistency are __________, ink, ________ and paper. |
mechanics ink prepress paper |
|
True or False
The user must install a CMM for Apple products. |
False
by default, Apple has a CMM installed |
|
What type(s) of ICC profile is used to convert non-device colour spaces to a PCS? |
space profile |
|
______________ is the one rendering intent not used in the graphics arts industry. |
saturation |
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After multiple tries, Wendy finally took a beautiful selfie and wanted to apply sepia tones to it. Which ICC profile type should Wendy use? |
abstract profile |
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When Conner installed the Adobe Creative Suite to his laptop, it audomatically includes a custom CMM called Adobe _________ ________ . |
Adobe Colour Engine (ACE) |
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A2B0/B2A0 LUTs are used with the _____________ rendering intent. |
perceptual |
|
True or False
Electronic files on the computer are always made through absolute colourimetric rendering intent. |
False
always relative |
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What does CRT stand for? |
Cathode Ray Tunes |
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Monitors have a limited gamut in the ________ (colour) direction. |
cyan |
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Name a pro and a con to using LED backlit screens. |
Pro - energy efficient, brighter Con - requires more measurement due to unpredictable characteristics |
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What are the 3 variables that can be adjusted on press during calibration? |
ink film thickness ink trapping squeeze |
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What does LCD stand for? |
Liquid Crystal Display |
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The colour temperature of monitors are usually around _________ K or ________ K to simulate D50 light temperature. |
5000K or 5500K |
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The colour temperature of monitors have a white point with lower temperatures are more _______ (colour) |
red |
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What are the 3 variables that can be adjusted in prepress during calibration? |
in original files CtP plate exposure CtP tone curve adjustment |
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Soft proofing requires 2 conversions: original source to _______ _____________ profile to monitor profile. |
final desination |
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What is the oldest method of calibration for the colour management of the printing press? |
density and 50% dot gain |
|
True or False
Optimal brightness defined by TAPPI is 450nm. |
True |
|
What does NPD stand for? |
Neutral Print Density |
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White light are all wavelengths emitted at ________ proportion. |
equal |
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The wavelengths of spectral reflections are as follows: blue is 400nm-______nm green is 550-600nm red is 650-700nm |
450nm |
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When a wavelength is 60% reflected, How much is absorbed? (%) |
40% is absorbed |
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Identify the colour of each line. |
red - cyan green - magenta blue - yellow |
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True or False
Monitor profiles are valid if created on one computer and used on another, as long as the two computers use the same model of display. |
False
|
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The standard contrast gamma curve recommended for use on Apple computers today is _________.
|
2.2
|
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Identify the colour of each line. |
red - 100% K green - 0% K blue - 50% K |
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Everything converted to a monitor colour space uses which rendering intent?
|
Relative colourimetric
|
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The amount of emitted light at from a monitor displaying its white point is referred to as its ____________ .
|
Luminance
|
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True or False
LCD display technology is generally capable of a brighter image than CRT technology. |
True
|
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What colour is the red line? |
50% yellow |
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A light source with a colour temperature of 2700 K is _________ than a light source with a colour temperature of 5500 K.
|
redder
|
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What are the three things needed to perceive colour?
|
light, object, observer
|
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The ______ is the area of the human eye most sensitive to colour.
|
fovea
|
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True or False
Everything displayed by an Apple computer is colour managed. |
True
|
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The L*a*b* colour space is based what what light source?
|
D50
|
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Name two methods of press calibration.
|
TVI Soild Ink Targets & G7
|
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The nChannel ICC profiles used for _____ colours.
|
spot
|
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True or False
Standard computer displays are capable of reproducing all of a standard offset lithographygamut. |
False
|
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What 2 colour spaces can be used as the ICC PCS?
|
L*a*b* & XYZ
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A2B tables in ICC profiles are used for conversion between ______ _________ to PCS.
|
device counts
|
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What does D2T2 stand for?
|
Dye Diffusion Thermal Transfer
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Name the 4 types of hardcopy proofs.
|
Content
Dot Gain Colour Contract |
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_________ technology sprays tiny droplets in stochastic pattern ontothe substrate
|
Inkjet
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To set the consistency of a monitor what 3 things must you use the hardware for to set aim points?
|
brightness
colour temperature contrast |
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When a simple target consisting of CMYK stepsis printed with colour maanagement turned off to view the even distribution on an inkjet printer, it is called _______________ .
|
Linearization
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A proof certification verifies the accuracy of the proof to the target ______ condition.
|
press
|
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True or False
All devices in an ICC workflows speak the same PCS language. |
True
ICC workflows are open workflows |
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What does A stand for in regards to a light source (Illuminant A)?
|
Incandescent light bulb
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The ______________ colour space are devicecounts and associated colourimetric values of the image/colour on a device thatis being proofed.
|
simulation
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What are the 3 interactions of spot colour management?
|
Simple
Duotone Complex |
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_______ binding has a higher risk of miscommunication.
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Late
|
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Which image file format includes processing the makes camera does toimprove image and has been rendered in the camera?
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JPEG
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True or False
The pattern created by Bryce Baye was each linealternates between red and blue or blue and green. |
False
red and green blue and green |
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What is the most common pattern for camera sensors?
|
Bayer
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RGB for a digital camera is designed to give the user pleasing images notnecessarily ________ colour
|
accurate
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The typical workflow consists of the following:
__________,design, prepress, ________, final output |
capture,design, prepress, proof, final output
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True or False
Photosensitive cells are colour blind on theirowncolour coating. |
True
|
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M is a process ink because it reflects how much of the visual spectrum?
|
2/3
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An advantage to early binding is we can ___________ device values that are necessary.
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preserve
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Describe the steps of a proofing workflow from a tagged RGB image, simulating an offset press on an Epson.
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RGB Image = perceptual -> CMYK Press = absolute -> CMYK Proofer
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Scanners always have their own internal _______ source.
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light
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What is the name of the mathematical model we use to define the human visual system?
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1931 CIE 2 Degree Standard Observer
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What sort of calculation might a CMM have to do during an ICC based colour conversion?
|
interpolation & chromatic adaptation
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