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Now that you have an understanding of the basic color depths used in most digital-image-editing and compositing pipelines, we are going to be focusing on the 32-bit RGBA mode from here on out. The RGBA mode is tantamount for all of the compositing layers in an image composite other than the 24-bit color image back plate. We are also not going to focus on High Dynamic Range Imagery (HDRI) because it is data heavy and not practical for the types of usage that most of the book’s readers will target, which include the Internet, e-books, iTV sets, smart phones, smart watches, tablets, netbooks, laptops and so forth.
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