Non-Destructive Image Editing

Questions

Part I – The Evolution of Non-Destructive Imaging Define ‘Non Destructive Imaging’ This refers to imaging processes where the source image may be adjusted in a way that leaves the original data intact. List four challenges introduced by digital photography :-  The creation of a vast number of photos.  The need to apply identical adjustments to many photos in one operation.  The need to interpret a single source image in multiple ways (black and white, and colour, for instance). The desire to take advantage of rapidly evolving imaging technology to reinterpret images with more capable software in the future. What is meant by a ‘Derivative File’ ? This refers to a version of the photo file that has had some adjustments incorporated—which is called a derivative file, since it’s derived from the original. What are two problems with using ‘Save As …’ to create derivative files ? The creation of multiple variations of a photo could bring great confusion The entire file needs to be resaved, even small changes require resources to duplicate and archive the entire file which takes up a lot of storage space. What is ‘Self Referenced Non Destructive Imaging’ ? Refers to when adjustment layers were introduced, and it became possible to wrap up the source image with a set of instructions (or many sets of instructions) for rendering the photo. An adjustment layer is the instruction that tells the software how to manipulate the image and applies these instructions to the image. This is information that is saved as metadata, and doesn't change the source file. Source File + Instructions = Final Appearance. List two advantages of Self Referenced NDI over the use of Derivative Files :- Much more economical in terms of storage. Is much easier to sort out what has been done to an image Define ‘Parametric Image Editing’ : Refers to the editing of images by creating instructions or parameters. What is the difference between a Live Rendering and a Fixed Rendering ? A live rendering is a view of the image that only exists when the source image is loaded into the software, whereas fixed rendering refers to any image that has its rendering described in pixel information, such as an RGB or a grayscale value, we can view this as a jpeg, where all edits have been locked in and can no longer be undone.  List three advantages of NDI : a.        Saves money                                                                                                          b.        Saves Time                                                                                                                                     c.        Allows Creative freedom