Additive Vs Subtractive Colour Theory

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  • Опубликовано: 9 апр 2020
  • For the most part, you'll be using Additive colour theory in Photoshop. In this lecture we'll learn about the RGB colour space and the basics of colour correction.

Комментарии • 26

  • @gbns1
    @gbns1 14 дней назад

    i always wondered this so googled it and ended here......... very interesting lecture... thank you !

  • @angelabrummett3695
    @angelabrummett3695 Год назад +1

    I am getting my psychology degree and never understood additive versus subtractive color mixing in perception until this video! None of my psych professors ever made it this simple for me. Thank you!!

  • @juliemoreno3905
    @juliemoreno3905 3 года назад +11

    As a first-year graphic design student, this was incredibly helpful and dug me out of my pit of confusion ;) Thank you so much!

    • @GregDanbrookeLectures
      @GregDanbrookeLectures  3 года назад +3

      If you liked this lecture, here's a great video by Captain Disillusion that takes a deeper dive: ruclips.net/video/FTKP0Y9MVus/видео.html

  • @davehummel8057
    @davehummel8057 14 дней назад

    That was great. Thank you.

  • @brycefountain3545
    @brycefountain3545 2 года назад +3

    Wow, I was curious on printer colours, this I found this. Great explanation!

  • @user-gz2vl5ow8r
    @user-gz2vl5ow8r Год назад

    I have a makeup artist test for film tomorrow morning and I was really struggling with the additive and subtractive color theory portion of my study guide. This helped so much! Thank you!! So easy to understand than just reading a textbook on it. Thank you, thank you, thank you!

  • @presteej7605
    @presteej7605 2 года назад +3

    You're a great teacher. Thank you 😊

  • @chiasprout5224
    @chiasprout5224 Год назад +1

    Awesome video, helpful for intro psyc too!

  • @husnimarwan
    @husnimarwan 3 года назад +2

    Great demonstration!

  • @Taerus
    @Taerus 9 месяцев назад

    Amazing lecture

  • @ethanalgicosathlonchannel1110
    @ethanalgicosathlonchannel1110 2 года назад +1

    Excellent video! Surprised no one’s criticised it yet

  • @stray_cat87
    @stray_cat87 2 года назад +2

    Shout out to those fellow no-sleep art students out there!

    • @luke-jf6td
      @luke-jf6td 5 месяцев назад

      haha me right now!

  • @paulbali9998
    @paulbali9998 2 года назад +1

    thanks! grateful for the overview, admit i started getting lost around "Becky".

    • @GregDanbrookeLectures
      @GregDanbrookeLectures  2 года назад +1

      That section relates to doing colour corrections on photographs. The camera's Auto White-Balance saw the Magenta in Becky's sweater and incorrectly assumed that the image had an overall Magenta cast, so it added some Green (the opposite of Magenta) to try to colour correct it. This gave us an image with a greenish cast (hence Becky looking a bit greenish/sickly).
      In Photoshop, with the image in RGB you could use the Green channel to subtract some green and fix the image.
      If, however, you were working in CMYK (maybe preparing the image for printing in a magazine using a commercial press), you wouldn't have a Green channel, so you'd have to go to the Magenta channel (the opposite of green) and add some Magenta (the opposite of removing some green) to fix the Greenish cast. This shows the inverse relationship between the colours in the Additive (RGB) and Subtractive (CMYK) colour spaces.

  • @mscximenacuriel4491
    @mscximenacuriel4491 2 года назад +1

    Wow! How did you achieve to create the effect un photoshop?! 😱

    • @xx1simon1xx
      @xx1simon1xx 2 года назад +2

      on the right, where the layers are, you can see that the blend mode is set to "linear dodge/ add",
      if you do that with all the layers, you get this effect

    • @mscximenacuriel4491
      @mscximenacuriel4491 2 года назад +1

      @@xx1simon1xx thank you so much! I’ll try to do it

    • @GregDanbrookeLectures
      @GregDanbrookeLectures  2 года назад +1

      @@mscximenacuriel4491 Linear dodge works on black. If you want to simulate the look on white, try Linear Burn.

  • @nudiefoodielol8827
    @nudiefoodielol8827 3 года назад +1

    i wanna go to the app can somone send me link

  • @istvancsepregi5996
    @istvancsepregi5996 Год назад

    Három fő szín létezik: piros, sárga, kék! Ezek a színek nem keverhetők ki más színekből! A zöld a sárga és a kék keveréke. 1.42- nél szereplő ábra rossz, hamis. Piros és zöld keverékéből nem lesz sárga, esetleg barna! Kék és zöld keverékéből nem lesz halvány kék, esetleg kékeszöld ! A piros és kék keverékét véletlenül eltalálták, az valóban lila.

    • @GregDanbrookeLectures
      @GregDanbrookeLectures  Год назад

      Szia István. A művészek előválasztásaira gondolsz (amit néha átlátszatlan festékeknek is neveznek, mert ez magában foglalja az átlátszatlan festékek keverését), és valóban igazad van abban, hogy a sárga és a kék festék keverésével zöldet kapsz (és a vörös és zöld festék keveréke legyen különösen vonzó). Ebben az előadásban a fényképészeti primereket (más néven "adalékos" primereket) vizsgáljuk, ahol a tiszta fény (különböző elektromágneses frekvenciák) összeadásával foglalkozunk, nem pedig festékekkel vagy pigmentekkel, amelyek kivonnak (elnyelnek). ) fény. A piros és a zöld fény kombinálása valóban sárga színt eredményez. Piros és zöld festék biztosan nem.
      Hi István. You're thinking of the Artists' primaries (sometimes called the Opaque primaries, because it involves mixing opaque paints), and you are indeed right that mixing yellow and blue paint will give you green, (and a mixture of red and green paint will be particularly unappealing). In this lecture, we're looking at the Photographic primaries (also called the 'Additive' primaries), where we're dealing with the adding together of pure light (different electromagnetic frequencies), rather than paints or pigments, which subtract (absorb) light. Combining red light and green light will indeed give yellow. Red and green paint definitely will not.