ACE Color Correction and Management 2 — Questions and Answers
Question 1: Which blend mode is most effective for correcting color casts when using a Solid Color fill layer?
- Color (Correct answer)
- Hue
- Saturation
- Luminosity
Correct answer: Color
Color blend mode changes the hue and saturation of underlying pixels while preserving luminosity, making it ideal for color cast correction with fill layers.
Question 2: What does the Rendering Intent 'Perceptual' prioritize when converting between color spaces?
- Preserving out-of-gamut colors
- Maintaining overall visual relationships between colors (Correct answer)
- Matching exact color values
- Saturating colors to fill the destination gamut
Correct answer: Maintaining overall visual relationships between colors
Perceptual rendering intent compresses all colors proportionally to maintain visual relationships, even if absolute color values shift.
Question 3: In Photoshop's Curves dialog, pulling the midpoint of the RGB composite curve upward will:
- Increase contrast in highlights only
- Brighten midtones while compressing shadow/highlight detail (Correct answer)
- Shift the white point lower
- Add a warm color cast to shadows
Correct answer: Brighten midtones while compressing shadow/highlight detail
Pulling the RGB midpoint up brightens midtones but compresses the tonal range at both shadows and highlights.
Question 4: Which Photoshop tool allows you to sample multiple colors across an image and display their values simultaneously?
- Histogram panel
- Color Sampler tool (Correct answer)
- Info panel alone
- Eyedropper with 5x5 average
Correct answer: Color Sampler tool
The Color Sampler tool places up to ten persistent sample points whose values are displayed in the Info panel at all times.
Question 5: When using Selective Color adjustment, what does increasing the 'Black' slider in the 'Reds' channel accomplish?
- Adds cyan ink to red areas
- Darkens only the red areas by adding black ink (Correct answer)
- Converts red pixels to grayscale
- Reduces saturation of red tones
Correct answer: Darkens only the red areas by adding black ink
The Black slider in Selective Color adds or subtracts black ink from the selected color range, darkening those specific tonal areas.
Question 6: Which color profile is best suited for images destined exclusively for web display?
- Adobe RGB (1998)
- ProPhoto RGB
- sRGB IEC61966-2.1 (Correct answer)
- CMYK US Web Coated
Correct answer: sRGB IEC61966-2.1
sRGB matches the color space of most monitors and web browsers, making it the standard profile for web-only images.
Question 7: What is the purpose of the 'Use Black Point Compensation' option in Photoshop's color conversion settings?
- Maps the darkest shadow of the source to the darkest shadow of the destination (Correct answer)
- Prevents clipping in highlights during conversion
- Converts all blacks to Registration color in CMYK
- Forces absolute colorimetric rendering for shadows
Correct answer: Maps the darkest shadow of the source to the darkest shadow of the destination
Black Point Compensation scales the shadow tones so the source's darkest point maps to the destination's darkest point, preserving shadow detail.
ACE Color Correction and Management 2
Which blend mode is most effective for correcting color casts when using a Solid Color fill layer?