On Fri, Aug 6, 2010 at 5:26 PM, paul stenquist <[email protected]> wrote:
> For the most part, PhotoShop does the same thing when working with RAW > images. The original DNG or PEF file remains after you create a tiff, and a > simple click on "camera default" takes you right back to where you started. > Not true with jpegs or tiffs of course, but since I work with RAW > exclusively, I know I always have the original image data. The difference is that Photoshop (via the Camera Raw plug-in) allows you to render a raw file to a TIFF or JPEG, then you have a TIFF/JPEG and a raw file. And as you edit the TIFF/JPEG further, unless you're good about working in layers and such, each time you save it is irrevocably changed. Typically, as you try different things, you end up with a number of TIFFs/JPEGs representing the intermediate stages of development. Going back to the raw file means starting from scratch all over again. When you're done, you have your original raw, all the intermediate temp files, and your final products. To save space one normally deletes the intermediate temp files, and if you want to work on the image again, you start from scratch. With LR, the original image file is read and left alone. As you edit, each change you make is stored in the database. At any time, you can snapshot a particular rendering. At any time, you can back down the edits to any point and continue in a different direction from there. At any time you can make a virtual copy of the image and pursue a different rendering path ... a different crop, a monochrome or color rendering ... starting from scratch or from any point in the edit history. At all times, you have exactly one master original file per image to manage or take up disk space, all the edits are rendered dynamically and automatically for you. When you're done, you have the original image file, a compactly represented complete edit chain which has all the information about the entire editing history, and whatever your finished image product files are (exported from the environment). And this is true whether your originals image files are raw (inc DNG), jpeg, tiff or psd. The Lightroom model of operation is significantly better at minimizing disk space consumption and providing the capability of full bidirectional editing history traversal. With any supported type of original image file. -- Godfrey godfreydigiorgi.posterous.com -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
