Processing camera raw files
When you make adjustments to a camera raw image, such as straightening or cropping the image, Photoshop and Bridge preserve the original camera raw file data. This way, you can edit the image as you desire, export the edited image, and keep the original intact for future use or other adjustments.Opening camera raw images
Both Adobe Bridge and Photoshop CS2 let you open and process multiple camera raw images simultaneously. They feature an identical Camera Raw dialog box, which provides extensive controls for adjusting white balance, exposure, contrast, sharpness, tone curves, and much more. If you have multiple exposures of the same shot, you can use the Camera Raw dialog box to process one of the images, and then apply the settings to all of the other shots. You will do that in this exercise.
| 1. | In Bridge, navigate to the Lessons/Lesson08/Mission folder, which contains three shots of the Spanish church you previewed in the previous exercise. | | 2. | Press Shift and click to select all of the imagesMission01.crw, Mission02.crw, and Mission03.crw, and then choose File > Open in Camera Raw.A. Tools B. Preview controls C. Filmstrip thumbnail D. Image preview E. Zoom controls F. RGB values G. Histogram H. Settings menu I. Tonal and color-correction palettes J. Multi-image navigation controls K. Workflow options[View full size image] The Camera Raw dialog box displays a large preview of the first raw image, and a filmstrip down the left side of the dialog box of all of the open camera raw images. The histogram at right shows the tonal range of the first image, and the workflow options at the bottom of the dialog box show the first image's color space, bit-depth, size, and resolution. An array of tools at the top of the dialog box let you zoom and pan the image, select colors, crop, rotate, and more. Tabbed palettes along the right side of the dialog box allow you to adjust the image's white balance, color, tone, and detail. You will explore these contols now, editing the first image file. | | 3. | Click the forward arrow button under the main preview areaor scroll down the filmstrip and select each thumbnail in turnto cycle through the images, and return to Mission 01.crw. | | 4. | Make sure the Preview box is checked at the top of the dialog box so that you can interactively see the adjustments you're about to make. For now, leave the Shadows and Highlights boxes unchecked. |
Adjusting white balance and exposure
An image's white balance reflects the lighting conditions under which the photo was captured. A digital camera records the white balance at the time of exposure, and this is what initially appears in the Camera Raw dialog box image preview.White balance comprises two components. The first is temperature, which is measured in kelvins and determines the level of "coolness" or "warmness" of the imagethat is, its cool blue-green tones or warm yellow-red tones. The second component is tint, which compensates for magenta or green color casts in the image.A camera's white balance usually comes close to being optimal, but you can adjust it if it's not quite right. Adjusting an image's white balance is a good way to start your corrections.
| 1. | Click the Adjust tab to bring that palette forward (if it's not already open) and choose Cloudy from the White Balance pop-up menu. The Cloudy White Balance temperature is a little warmer than the Daylight setting and nicely suits this image, which was taken on a cloudy day. | | 2. | Change the other sliders in the Adjust palette as follows:Set the Exposure to +1.20.Set Shadows to 0.Set Brightness to 50.Set Contrast to +29.Set Saturation to 5.
 These settings help pump up the midtones of this image and make the image look bolder and more dimensional without being oversaturated. |
About the camera raw histogram
The histogram in the upper right corner of the Camera Raw dialog box simultaneously shows the Red, Green, and Blue channels of the previewed image, and it updates interactively as you adjust any settings. Also, as you move any tool over the preview image, the RGB values for the area under the cursor appear above the histogram. |
Applying sharpening
Next, you will sharpen the image to bring out more detail.
| 1. | Click the Detail tab to bring that palette forward, and zoom in to the top of the mission tower so that you can see the detail (to at least 100%). | | 2. | Drag the Sharpness slider to about 35.[View full size image] The higher sharpness value gives stronger definition to the details and edges in this mission image. |
Synchronizing settings across images
Now that you've made this one mission image look stunning, you can automatically apply these camera raw settings to the other two mission images, which were shot at the same time under the same lighting conditions. You do this using the Synchronize command.
| 1. | In the upper left corner of the Camera Raw dialog box, click the Select All button to select all of the thumbnails in the filmstrip. | | 2. | Click the Synchronize button.The Synchronize dialog box that appears lets you choose which settings you want to synchronize across the selected images. By default, all options (except Crop) are checked. That's OK for our project, even though we didn't change all of the settings. | | 3. | Click OK. When you synchronize the settings across all of the selected camera raw images, the thumbnails update to reflect the changes you made. If you'd like, you can click the navigational arrows to cycle through a large preview of each image to see the adjustments. |
NoteIf you'd like, check the Highlights and Shadows boxes at the top of the dialog box now. Portions of the images that are in danger of being clipped because they are either too light or too dark will appear red or blue, respectively, in the image preview. It's important to try to minimize the risk of clipping by adjusting an image's tonal levels, but these images don't have a significant amount of blown-out highlights or shadows to adjust.Saving camera raw changes
Saving your changes so far involves two tasks: first, saving the synchronized changes to all three images and then saving one image, Mission01, for the PDF portfolio you will create later in this lesson.
| 1. | Make sure all three images are still selected in the Camera Raw filmstrip, and then click the Save 3 Images button. | | 2. | In the Save Options dialog box that appears, do the following:Choose the same location (the Lessons/Lesson08/Mission folder).Under File Naming, leave Document Name in the first blank field.Choose Format > JPEG at the bottom of the dialog box.Click Save.
[View full size image] This will save your corrected images as downsampled 72-dpi JPEGs, which can be shared with colleagues and viewed on the Web. Your files will be named Mission01.jpg, Mission02.jpg, and Mission03.jpg.NoteBefore sharing these images on the Web, you would probably want to open them in Photoshop and resize them to 640 x 480 pixels. They are currently much larger, and the full-size images would not be visible on most monitors without requiring the viewer to scroll.
About file formats
The camera raw Save Options dialog box provides four file-format options: DNG, JPEG, TIFF, and PSD. All of these formats can be used to save RGB and CMYK continuous-tone, bitmapped images, and all of them (except DNG) are also available in the Photoshop Save and Save As dialog boxes.The Adobe Digital Negative (DNG) format contains raw image data from a digital camera as well as metadata that defines what the image data means. DNG is meant to be an industry-wide standard format for camera raw image data, helping photographers manage the variety of proprietary camera raw formats and providing a compatible archival format.The Joint Photographic Experts Group (JPEG) file format is commonly used to display photographs and other continuous-tone RGB images on the World Wide Web. JPEG format retains all color information in an image but compresses file size by selectively discarding data. The greater the compression, the lower the image quality, and vice versa.The Tagged Image File Format (TIFF) is used to exchange files between applications and computer platforms. TIFF is a flexible format supported by virtually all paint, image-editing, and page-layout applications. Also, virtually all desktop scanners can produce TIFF images.The Photoshop format (PSD) is the default file format. Because of the tight integration between Adobe products, other Adobe applications such as Adobe Illustrator, Adobe InDesign, and Adobe GoLive can directly import PSD files and preserve many Photoshop features. |
Bridge returns you to the Camera Raw dialog box and indicates how many images have been processed until all images are saved. The .crw thumbnails still appear in the Camera Raw dialog boxyou now have JPG versions as well as the original, unedited .crw image files, which you can continue to edit or leave for another time.Now, you will save a copy of the Mission01 image to the Portfolio folder, where all of your portfolio images will be saved. | | 3. | With only Mission01.crw selected in the filmstrip in the Camera Raw dialog box, click the Open 1 Image button to open the (edited) raw image in Photoshop. | | 4. | Choose File > Save As. In the Save As dialog box, choose Photoshop as your Format, and save this image with the name mission_final.psd in the Lesson08/Portfolio folder. Then close it.Now that you know how to process a camera raw image, you will learn how to make some common corrections to a different digital photograph. |
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