Find and select the images you want to merge, then click OK.HDR Efex Pro 2 opens, along with a dialog to select images.Go to the File menu, then go to the Automate sub-menu.HDR Efex Pro 2, which offers image merging, is special because you don’t need to have the images already open in Photoshop*: Processed photo returned to Photoshop Launching HDR Efex Pro 2 Image: Chris Gorman Processing in the Nik Collection (Silver Efex Pro 3). Access to the Nik Collection from the Photoshop filter menu. See the Workflow chapter in the pages of the associated programs. You can also process your images in the Nik Collection through Photoshop from your host application, such as DxO PhotoLab or Adobe Lightroom Classic. * This procedure applies to both Photoshop and Photoshop Elements. Save or Save As (to create another file), then exit Photoshop.Your processed image is displayed in Photoshop.The plugin applies processing and then closes.Click on OK (or Apply for Silver Efex Pro 3 and Viveza 3).Perform your processing and corrections.The image will open in the selected plugin.