Archiving And Working With dng
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213
CONVERTING TO DNG WITH CAMERA RAW
Converting to DNG
with Camera Raw
Regardless of whether you are working on one image or a series
of several images, here is the basic step-by-step process for us-
ing Camera Raw to convert your RAW les into the DNG format.
I’ll get more specic about converting multiple les later in this
section.
To convert:
Open your native 1. RAW file or files
in Camera Raw. It doesn’t matter if
Camera Raw is hosted by Photoshop
or Bridge.
Use Camera Raw to adjust or tweak 2.
your images. (If your images need no
adjustment, you can obviously skip
this step.)
Chose Save Images from the bottom 3.
left of the Camera Raw dialog box.
The Save Options dialog box, shown
in Figure 11-14, appears. (In the
future, you can skip this dialog box by
holding the Option (Alt) key when you
select Save Images.
Choose a Destination from the pop-up
menu shown in Figure 11-15. You can
select Save in New Location or Save in
Same Location. If you choose Save in
New Location you can select a separate
destination for your converted images.
Choose a File Naming protocol. As you
can see in Figure 11-16, the choices here
are similar to those you get with the Batch
Rename command.
From the Save Options dialog box, you
can also save your RAW file into other
file formats such as JPEG, TIFF, or PSD, by
selecting from the Format pop-up menu,
shown in Figure 11-17. You can select and
save only one file format at a time. If you
want to save multiple file formats. you’ll
need to refer to Chapter 12.
Figure 11-14
Figure 11-15
Figure 11-16
Figure 11-17
214
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CHAPTER ElEvEn
CONVERTING TO DNG WITH CAMERA RAW
When you choose a Format, an
appropriate extension is selected. The
file extension for DNG is .dng, obviously.
(Uppercase is also an option.) As you can
see in Figure 11-18, there are a few other
options here:
Select • Compressed (lossless) and your
DNG file will be about a 1/3 smaller
than the original RAW file with no
tradeoff in quality or flexibility. It does,
however, slow the conversion process
considerably.
Select • Convert to Linear Image and
your file will be more than three times
the size of the original RAW file. Since
it is separated into separate red, green,
and blue channels, you’ve essentially
lost many of the advantages of saving
RAW data. Adobe claims that in some
instances, saving a demosaiced file can
improve compatibility, particularly if
the camera sensor contains an unusual
mosaic pattern that all converters do
not support.
Select • Embed Original Raw File if you
want an exact copy of the original
RAW file stored within the DNG file.
This will create a file about 2/3 larger
than the original RAW file. At this time,
you’ll need the Adobe DNG converter
to retrieve the stored file from the
DNG file.
When you select Save, you return to the
Camera Raw workspace and you’ll get
a save status message at the bottom of
the window (enlarged in Figure 11-19). It
may take some time, depending on the
number of files you are converting and
the options you choose.
Figure 11-19
Figure 11-18

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