The image opens in Photoshop with the initial Lightroom adjustments that students made in the last section of this lesson. The color space, bit depth, and resolution of the image in Photoshop are those that students set in Lightroom’s preferences in Lesson 1. The filename at the top of Photoshop’s document window still displays a raw suffix (.dng), because the rendered image exists only in memory until it is saved in Photoshop.
Encountering a Lightroom-Camera Raw mismatch If the versions of Lightroom and Camera Raw on a classroom workstation don’t match, when a student uses the Edit In command to pass an image from Lightroom to Photoshop a warning like this may appear: “This version of Lightroom may require the Photoshop Camera Raw plug-in version [xx].” Consult the sidebar “Encountering a Lightroom-Camera mismatch,” located later in Lesson 2, for information about which option to choose in this warning. To avoid this warning in the future, keep the classroom workstations continuously updated with the latest versions of Lightroom, Photoshop, and Camera Raw.
Editing in Photoshop In this section, students make two edits to the rendered image in Photoshop— adding text (ASPEN) and removing content (the jet trail in the sky). These edits add a type layer and a pixel layer in the Layers panel. Although Lightroom has some features with which you could attempt these edits (the Identity Plate in Lightroom’s Print module for adding small amounts of text, and the Spot Healing Brush tool in Lightroom’s Develop module for removing content), Photoshop has more fullfeatured tools and options for accomplishing both. If students are Photoshop beginners, you may want to precede this section with an introduction to Photoshop. Adobe Photoshop CC Classroom in a Book is a useful resource.
Saving an RGB file from Photoshop to Lightroom In this section, students save the image they edited in Photoshop in the last section. Saving that image using Photoshop’s Save command generates a derivative copy that is automatically included in the Lightroom catalog. Emphasize the importance of using Photoshop’s Save command rather than the Save As command to ensure that Lightroom recognizes the derivative file as related to the source file and includes it in the Lightroom catalog automatically. The source file in this exercise happens to be a raw file. The derivative file saved from Photoshop is an RGB file, which is always the case in a Lightroom–Photoshop workflow. The format of this derivative file is TIFF, because that’s the file format option that students set in Lightroom’s primary external editor preferences in Lesson 1. 18