Colour Modes and Bit Depth – Basix
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Colour Modes and Bit Depth – Basix

on Dec 29th 2010 with 22 comments
Tutorial Details
  • Program: Adobe Photoshop CS5
  • Difficulty: Beginner
  • Estimated Completion Time: 10 Minutes

Final Product What You'll Be Creating

This entry is part 4 of 29 in the Photoshop Basix Session
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Are you new to Photoshop? Have you been trying to teach yourself the basics of Photoshop but have found the amount of educational material available on the net a bit overwhelming? As the world’s #1 Photoshop site, we’ve published a lot of tutorials. So many, in fact, that we understand how overwhelming our site may be to those of you who may be brand new to Photoshop. This tutorial is part of a 25-part video series demonstrating everything you will need to know to start working in Photoshop.

Photoshop Basix, by Adobe Certified Expert and Instructor, Martin Perhiniak includes 25 short video tutorials, around 5 – 10 minutes in length that will teach you all the fundamentals of working with Photoshop. Today’s tutorial, Part 4: Colour Modes and Bit Depth will explain the difference between RGB vs. CMYK, JPEG vs. RAW, as well as how to proof and manage colours. Let’s get started!

 
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Martin is a Hungarian graphic designer, digital artist and an Adobe Certified Expert and Instructor (Design Master). He is currently teaching and working in London but usually travels around the UK and share his love for Adobe products and graphic design. You can follow him on his blog or on Twitter.  

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  • iggy21

    Part 12 of 4?

    • yoni

      lol. People are stupid

    • http://psd.tutsplus.com/ Grant Friedman

      Thanks for pointing that out. The plugin that manages this series is a bit wacky.

  • http://bismillahbd20.blogspot.com Masumbilah

    Creative & very effective for background design.

  • Geoffboyardee

    Thanks. I had really been questioning what “bits” were.

  • Marco Palazzo

    I definitely love this series!

  • Shewmaker

    Video seems to suggest that you can upscale from an original photograph bit depth to a Camera Raw bit depth using only software.

    In point of fact, you need to start with something which can capture the information in the Camera Raw file. If you are working with a Print or a negative, you will need a scanner which is able to save higher bit depth information. If you are working with digital photographs, the original must have been captured with a camera which saved the higher bit depth information to a file.

    If you are using a camera which only saves 8 bits per channel across 3 channels (RGB) you can not upscale from the 24 bit depth file. There may be some software packages create artificial interpolations but they are only simulations.

  • http://www.bausi2k.com Claudio von grubens

    really great man!!

  • http://conceptgenius.com Lukasz

    Just as a note, the 6 digit number is a hexadecimal value, noticed this wasn’t mentioned. just another term to add to our, probably already, giant list.

    Hex numbers use 16 digits:

    0 1 2 3 4 5 6 7 8 9 A B C D E F

    Zero, “0″, is the smallest representations of a color. It’s almost the total absence of color. F is 15 times the intensity of the color of 0. Combination of these digits create different shades of a particular color. Double Zero, “00,” is equal to zero hue. FF is equal to a pure color.

    • juanfevasquez

      Good tip, thanks a lot!

  • http://www.graphiics.com Graphiics

    man its very great Tips for every one..i have tweeted it …:)

  • Mutahhar Mustafa

    Is there a place where one can get ONE free camera RAW image file for free… I searched but couldn’t find one. I am no photographer so can someone please help out… Just wanna see how much editing one can do with Camera RAW with photoshop.

    • Gensael

      You can take a RAW image with even the most basic digital camera at this point. That’s probably your cheapest route. If you don’t have one, just have a friend take a photo for you. Import the Camera RAW file and you have your file!

  • http://www.parasuniversal.com Paras Universal

    Great vid… RGB and CMYK never stops to amaze me.

  • http://cookandmix.wordpress.com LadyLawrence

    Really great information. Only wish you’d covered the LAB color mode a bit more.

  • Gabby

    thnks

  • sriram

    thank youuuuu

  • Jess

    So if we are editing for print: should we work with photoshop in CMYK to ensure our colors match what will get printed:
    Also you mentioned to calibrate monitors: how do you do that?? that is my biggest concern that the colors i see on my computer monitor won’t match what is printed.

  • Intosuwo

    I really like these tuts, they are not available in Holland;
    Keep up the good work.

  • Anton

    I think that in example of JPEG vs. RAW image you should notice the processing/compressing that JPEG usualy go through and thus loosing information. My point is that I think you couldnt notice the difference between 24bit and 36bit RAW images (that dont go through postprocessing in the camera or computer).

  • Carol Little

    Thank you! I continue to learn with each episode. I appreciate the fact that all the episodes are here so they can be viewed by people like me who have just found your site. Also, I like the idea that I can go back and view the episode again.

  • http://thebasementofthealamo.com/ Mark

    I’ve shot in both and I usually change based on what I am going to do with the image. If it will be posted to the web, I’ll just shoot in jpeg. If I might make a print, it will be raw. It’s a good thing my camera can take both at the same time too.