[magick-users] PEF-raw-files question: convert nef:test.pef test.jpg

[Al Bogner]

When I execute:

convert nef:test.pef test.jpg

what does convert really do, converting the raw file or extracting the 
jpg-file?

I tried the following with

ImageMagick 6.3.1 12/28/06 Q16 http://www.imagemagick.org and Opensuse 10.2:



identify nef:test.pef
nef:test.pef=>test.pef NEF 3040x2024 3040x2024+0+0 DirectClass 8-bit
17.6047mb

8bit should be wrong, AFAIK has the rawfile 12bit.

identify test.jpg
test.jpg JPEG 3040x2024 3040x2024+0+0 DirectClass 8-bit 4.12668mb 0.720u
0:02

identify -verbose nef:test.pef | grep "Colors:"
  Colors: 545000

identify -verbose test.jpg | grep "Colors:"
  Colors: 229414

Ok, it looks like IM uses the raw file, to calculate the colors and not the 
included jpg-file.


identify nef:test.pef
nef:test.pef=>test.pef NEF 3040x2024 3040x2024+0+0 DirectClass 8-bit
17.6047mb

identify nef:test.pef | wc -l
1

That's strange, it should show 2 (files)


convert nef:test.pef[0] test0.jpg
convert nef:test.pef[1] test1.jpg

md5sum test*.jpg
280f126e820828d921edae4415e80aba  test0.jpg
280f126e820828d921edae4415e80aba  test1.jpg
280f126e820828d921edae4415e80aba  test.jpg

It is always the same file. So how do I extract the raw-file only or the 
jpeg-file?


ufraw-batch --out-type=ppm8 --output=test.ppm test.pef
identify -verbose test.ppm | grep "Colors:"
  Colors: 577072

Does anyone have an idea, why there are more colors than in the original one?

ufraw-batch --out-type=tiff8 --output=test8.tif test.pef
identify -verbose test8.tif | grep "Colors:"
  Colors: 577072


Al
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