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> I just started working with raw files,
Then you need to get The Book. Copied from another post:
You can get some information from Photoshop help, and online via LiveDocs:
the camera raw section in Photoshop help.
And more in the book "Real World Camera Raw With Photoshop CS3" by Bruce
Fraser and Jeff Schewe. See
Available from the publisher, Peachpit Press, Amazon, and others.
You will probably get a lot of different answers your question because everyone has their own preferred workflow. Generally speaking, however, I think it is best to do as much of your postprocessing in Camera Raw as possible because it is nondestructive. You do not have to save your image to a different format before you start working on it in Photoshop. By clicking the Open button in Camera Raw, any changes that you have made are stored as metadata, and then the image along with all those changes is opened in Photoshop. Once you have the image in Photoshop you are now going to be editing the pixels of the image directly. And once those types of modifications have begun you cannot save the image as a raw image or a DNG file. It will be necessary to store it in a different format. I think good choices are either as PSD or TIF because either of these formats will save your work without doing any damage to the image data. From either one of those formats you can create JPEG or any other type of image that you need when required. JPEG images are saved with a type of compression that can, over time and through multiple saves causes your image to deteriorate.
In summary, you always have your raw images to go back to if necessary to start over. Use PSD or TIF to save your working files in Photoshop. And only create JPEG images from those PSD or TIF when they are required for the Web or for e-mail, etc..
Thank you very much Jim for your emplanations.