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Discussion : Colour

  1. Define the meaning of CMYK and RGB
  2. Differentiate the purpose of;
    • Channel and Colour Correction
    • Saturation and Brightness

Answers:

Question 1:

I) CMYK stands for the colors cyan, magenta, yellow and black. It is the basic colors used for printing color images. CMYK color is a subtractive color model, meaning that it works by adding color to a white background, thus reducing the brightness of the background. Black ink is included in the process because it is difficult to mix black from cyan, magenta and yellow.

II) RGB stands for the colors red, green and black. RGB is usually used on a computer in designs field as the primary color. For examples for courseware. RGB color is known as an additive model. Where colors are added together to make up what we see on the screen.

In short words, CMYK mode is used when creating media for printing purposes, while RGB is  should be used when preparing graphics for viewing purposes on computer displays.

 

 

resources: http://www.visiblelogic.com/blog/2011/05/cmyk-rgb-pms-color-systems-defined/

https://www.techwalla.com/articles/what-is-cmyk-in-photoshop

http://thevisualcommunicationguy.com/2013/05/14/the-difference-between-cmyk-and-rgb-color/

 

Question 2:

                              Channel
  • used when we need precise control of adjusting color
  • remove color cast
  • More complex
Color correction
  • fixing the color when we did not get the white balance right
  • a process where every individual clip of a video footage is altered to match the color temperature of multiple shots to a consistent technical standard of appearance.
  • balancing out colors. For examples, making white actually appear exactly white and black as black. It is to make an image is fairly nice
  • to make a scene looks more natural and close to the way the human eye views something.
Saturation
  • the purity and strength of color, due to the absence of black, white or gray
  • To alter vibrancy of the color in the photograph, either to enhance dull colors or artificially dill bright colors.
  • also great for “colorizing photographs.” Which add the surreal effect to the image.
Brightness
  • Color brightness is the amount of light added to a color.
  • measures the relative degree of black or white that’s been mixed with a hue. Which adding white makes the color lighter and adding black make the color darker.

resource: https://www.motionelements.com/blog/articles/understanding-color-correction-vs-color-grading-for-post-production

http://photo.net/digital-darkroom-forum/00dHt0       

http://vanseodesign.com/web-design/hue-saturation-and-lightness/

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