Digital Imaging Basics Lesson Plan
In this course Graeme Cookson takes you through some of the essential concepts that help you to grasp how digital imaging works. Why should you care? Well because if you want to be a photographer that can compete with the best in the world, understanding how digital images work is critical.
Rather than mindlessly following a methodology that someone taught you, understanding what Graeme presents gives you the freedom to think through problems and come up with solutions. If you get to grips with this content, it you will be able to use any tool, Adobe Lightroom, Adobe Photoshop, Apple Aperture, Microsoft Expression Media, Photo Mechanic... you name it, and you will know what you are doing. At the very least you avoid making glaring errors and at the best you gain real respect as a real pro!
Image pixels
Resolution and file size
Tonal range
Image 'bit depth'
Grayscale v 'RGB gray'
Pixels v vectors
Pixel 'aspect ratio'
LAB colour space
Image pixels
When someone asks you to send them a 300 dpi image, what do they mean and have they given you enough information to really satisfy what they really need?
Resolution and file size
When someone asks you to send them a 300 dpi image, what do they mean and have they given you enough information to really satisfy what they really need?
Tonal range
It is amazing how quickly you can damage an image if you are simply doing adjustments by eye. But if you understand tonal range and the tools that allow you to see what you are doing, you have a scientific basis to push the image to its limits without damaging it. The sign of a pro!
Image 'bit depth'
Okay, so what on earth is 'bit depth' and what difference does it make to your images? Answer: a lot when pushing images to their limits.
Grayscale v 'RGB gray'
Why you might want to present your grayscale images in an RGB colour space, particularly for use in digital presentation such as on the web or in giving a presentation using a digital projector. Very helpful for presenting your portfolio.
Pixels v vectors
The digital world knows two ways of constructing images: pixels and vectors. Understanding the difference will help you deal with editors and clients intelligently.
Pixel 'aspect ratio'
A little obscure but worth knowing if you are dealing with images that you are receiving from others or that you have worked on yourself and you find they look squashed or stretched. Understanding this will help you fix it.
LAB colour space
Really obscure but very useful down the line when you come to advanced techniques in masking certain areas in images to make specific adjustments.
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