You have made specific reference to sharpening twice in this thread. In general, with an up-to-date copy of Lightroom it is fairly rare that one needs to take an image into Photoshop because the rich functionality to be found in Lightroom currently makes it far simpler and easier to edit in Lightroom compared to doing the same or similar in Photoshop. It is also possible to use virtual copies and snapshots to further simplify the process of doing complex edits in Lightroom. One can go back to an unedited view at any time and start again from scratch. In Lightroom one simply roles back to the previous edit in the edit history. If one makes a mistake in Photoshop with an edit there is often no way back. Also, unlike Photoshop, the original image is left completely untouched. When a derivative image is created, no matter the order in which you applied your edits, Lightroom will apply those edits in an order that maximises image quality. Once one is done editing an image in Lightroom it is possible to create a derivative image either by exporting one or using the Publish service. Smart objects are a partial solution to the whole issue that allow edits to be saved without necessarily been applied at a pixel level. Part of the problem is the order in which edits are applied is crucial - sharpening and noise reduction are particular examples of this. While Photoshop does have very powerful tools for image editing it takes a lot of learning and experience to use them effectively. Once an edit is applied it is permanent and cannot be reversed. What this means is that any edit applied to an image file in Photoshop is altering the image at a pixel level. Photoshop, on the other hand, is what is referred to as a "pixel editor". If one is editing DNG, TIFF, or JPEG files then those instructions are written directly back into the metadata section if those files. What you are seeing onscreen while editing is Lightroom updating, on the fly, using a pretty nifty process, a preview file - not the original image.īy the way the only difference between Lightroom and ACR in this regard is that ACR is writing those editing instructions directly to sidecar files called XMP files instead of a database if one is editing raw files. Instead, all the edits are recorded in a database (called a catalog in Lightroom) as instructions. What this means is that when one is editing an image the actual original image data is never altered. Lightroom is a parametric image editor or PIE for short. Despite the fact that they all ostensibly allow one to "edit" images that is where the similarity ends. Trying to compare ACR/Lightroom to Photoshop is a bit like comparing apples to oranges. If do you really need precise colour accuracy, because you are doing product photography say, then it is possible. James it seems to me that you are badly misinformed about several issues regarding the various Adobe products.įirstly colour correction is the only task that you mentioned that might perhaps be defined in terms of "accuracy".
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