PHOTOSHOP LIGHTROOM
User Guide
18
TIFF format
Tagged-Image File Format (TIFF, TIF) is used to exchange files between applications and computer platforms. TIFF is
a flexible bitmap image format supported by virtually all paint, image-editing, and page-layout applications. Also,
virtually all desktop scanners can produce TIFF images. Lightroom supports large documents saved in TIFF format (up
to 100 million pixels with pixel dimensions of no more than 10,000 on a side). However, most other applications,
including older versions of Photoshop (pre-Photoshop CS), do not support documents with file sizes greater than 2 GB.
The TIFF format provides greater compression and industry compatibility than Photoshop format (PSD), and is the
recommended format for exchanging files between Lightroom and Photoshop. In Lightroom, you can export TIFF
image files with a bit depth of 8 bits or 16 bits per channel.
JPEG format
Joint Photographic Experts Group (JPEG) format is commonly used to display photographs and other continuous-
tone images in web photo galleries, slideshows, presentations, and other online services. JPEG retains all color infor-
mation in an RGB image but compresses file size by selectively discarding data. A JPEG image is automatically
decompressed when opened. In most cases, the Best Quality setting produces a result indistinguishable from the
original.
Photoshop format (PSD)
Photoshop format (PSD) is the standard Photoshop file format. To import and work with a multi-layered PSD file in
Lightroom, the file must have been saved in Photoshop with the Maximize PSD and PSB File Compatibility
preference turned on. You’ll find the option in the Photoshop file handling preferences. Lightroom saves PSD files
with a bit depth or 8 bits or 16 bits per channel.
Import photos from disk into Lightroom
When you import photos into Lightroom, you can reference the photos in their existing location, move the photos
into a specific folder, or copy the photos into a specific folder.
1
In the Library module, do any of the following:
•
Click the Import button.
•
From the main menu, choose File > Import Photos From Disk.
•
Drag a folder with photos or individual photos into the Grid view. (Skip step 2.)
2
Navigate to and select the folder containing the photos to import, and then click Choose Selected (Windows) or
Choose (Mac OS). You can also select individual photos and choose Open (Windows) or Choose (Mac OS).
3
Select one of the following from the File Handling menu:
Import Photos At Their Current Location
Keeps the photo files in their current location by using the current folder
structure. Skip steps 4 and 5.
Copy Photos To A New Location And Import
Copies the photo files to the folder you choose, including any sidecar
files.
Move Photos To A New Location And Import
Moves the photo files to the folder you choose, including any sidecar
files. Files are removed from their current location.
Copy Photos As Digital Negative (DNG) And Import
Copies proprietary camera raw files to the folder you choose
and converts them to the Digital Negative (DNG) format.
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