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<HTML><HEAD><TITLE>Manpage of dcraw</TITLE>
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<H1>dcraw</H1>
Section: User Commands (1)<BR>Updated: February 2, 2012<BR><A HREF="#index">Index</A>
<A HREF="../index.html">Return to Main Contents</A><HR>
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<H2>NAME</H2>
dcraw - command-line decoder for raw digital photos
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<H2>SYNOPSIS</H2>
<B>dcraw</B>
[<I>OPTION</I>]... [<I>FILE</I>]...
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<H2>DESCRIPTION</H2>
<B>dcraw</B>
decodes raw photos, displays metadata, and extracts thumbnails.
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<H2>GENERAL OPTIONS</H2>
<DL COMPACT>
<DT><B>-v</B>
<DD>
Print verbose messages, not just warnings and errors.
<DT><B>-c</B>
<DD>
Write decoded images or thumbnails to standard output.
<DT><B>-e</B>
<DD>
Extract the camera-generated thumbnail, not the raw image.
You'll get either a JPEG or a PPM file, depending on the camera.
<DT><B>-z</B>
<DD>
Change the access and modification times of an AVI, JPEG, TIFF or raw
file to when the photo was taken, assuming that the camera clock
was set to Universal Time.
<DT><B>-i</B>
<DD>
Identify files but don't decode them.
Exit status is 0 if
<B>dcraw</B>
can decode the last file, 1 if it can't.
<B>-i -v</B>
shows metadata.
<DT><B></B>
<DD>
<B>dcraw</B>
cannot decode JPEG files!!
</DL>
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<H2>REPAIR OPTIONS</H2>
<DL COMPACT>
<DT><B>-I</B>
<DD>
Read the raw pixels from standard input in CPU byte order with
no header. Use
<B>dcraw -E -4</B>
to get the raw pixel values.
<DT><B>-P deadpixels.txt</B>
<DD>
Read the dead pixel list from this file instead of ".badpixels".
See
<B>FILES</B>
for a description of the format.
<DT><B>-K darkframe.pgm</B>
<DD>
Subtract a dark frame from the raw data. To generate a
dark frame, shoot a raw photo with no light and do
<B>dcraw -D -4 -j -t 0</B>.
<DT><B>-k darkness</B>
<DD>
When shadows appear foggy, you need to raise the darkness level.
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