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Yeah, I'm getting indentation too but on all sides. To be fair I was @11mm. Here is an example: http://www.douglasaden.com/_MG_3899.jpg

Awesome. I just ran your new python script and that did it (I didn't have to reinstall anything; lucky), thanks for taking the time to write a step by step install, and to trouble shoot. Now I will spend all day batch converting dualISO DNG's.

Contents of dev.log:

ufraw-batch --out-type=jpg --overwrite --temperature=5500 --green=1  --exposure=1.93514362066 'raw\_MG_3261.CR2' --output='tmp\_MG_3261-m.jpg' --shrink=1
ufraw-batch: Loaded raw\_MG_3261.CR2
ufraw-batch: Saved C:\Python27\ArcGIS10.1\tmp\_MG_3261-m.jpg

ufraw-batch --out-type=jpg --overwrite --temperature=5500 --green=1  --exposure=0.71757181033 'raw\_MG_3261.CR2' --output='tmp\_MG_3261-h0.jpg' --shrink=1
ufraw-batch: Loaded raw\_MG_3261.CR2
ufraw-batch: Saved C:\Python27\ArcGIS10.1\tmp\_MG_3261-h0.jpg

ufraw-batch --out-type=jpg --overwrite --temperature=5500 --green=1  --exposure=-0.5 'raw\_MG_3261.CR2' --output='tmp\_MG_3261-h1.jpg' --shrink=1
ufraw-batch: Loaded raw\_MG_3261.CR2
ufraw-batch: Saved C:\Python27\ArcGIS10.1\tmp\_MG_3261-h1.jpg

enfuse 'tmp\_MG_3261-m.jpg' 'tmp\_MG_3261-h0.jpg' 'tmp\_MG_3261-h1.jpg' --gray-projector=value --saturation-weight=0 --exposure-sigma=0.3 -o 'jpg\_MG_3261.jpg'

enfuse: info: input image "tmp\_MG_3261-m.jpg" does not have an alpha channel;
enfuse: info: assuming all pixels should contribute to the final image
enfuse: info: input image "tmp\_MG_3261-h0.jpg" does not have an alpha channel;
enfuse: info: assuming all pixels should contribute to the final image
enfuse: info: input image "tmp\_MG_3261-h1.jpg" does not have an alpha channel;
enfuse: info: assuming all pixels should contribute to the final image
enfuse: warning: no usable resolution found in first image "tmp\_MG_3261-m.jpg";
enfuse: warning:   will use 300 dpi
enfuse: info: loading next image: tmp\_MG_3261-m.jpg 1/1
enfuse: info: loading next image: tmp\_MG_3261-h0.jpg 1/1
enfuse: info: loading next image: tmp\_MG_3261-h1.jpg 1/1

exiftool -TagsFromFile 'raw\_MG_3261.CR2' -comment="overall_bias=0; highlight_level=20000; midtone_level=10000; shadow_level=1000; ufraw_options='--temperature=5500 --green=1 '; midtones: brightness level  3665 => exposure +1.94 EV; highlights: brightness level 61357 => exposure +0.72,-0.50 EV ; shadows: brightness level   629 => exposure +0.67 EV (skipping)" -ThumbnailImage= -PreviewImage= -Orientation= -z -overwrite_original 'jpg\_MG_3261.jpg'
    0 image files updated

    1 files weren't updated due to errors


Error: File not found - jpg/_MG_3261.jpg

OK so it seems like I just keep installing things in the wrong place. Thanks for putting up with me. I copied the contents of the ufraw bin folder into the working (python) directory and now it successfully creates the three files in the temp folder.

I am presumably still missing something there though. New output:
C:\Python27\ArcGIS10.1>python Uniform_exposure.py
Warning: could not create output dir 'jpg'
Warning: could not create working dir 'tmp'

raw\_MG_3261.CR2:
--temperature=5500 --green=1
dcraw -c -h -4 'raw\_MG_3261.CR2'
convert - -type Grayscale -gravity Center  -scale 500x500 -format %c histogram:i
nfo:-
    midtones: brightness level  3665 => exposure +1.94 EV
  highlights: brightness level 61357 => exposure +0.72,-0.50 EV
     shadows: brightness level   629 => exposure +0.67 EV (skipping)
(midtones) (highlights.) (enfuse) (<type 'exceptions.WindowsError'>, WindowsErr
or(2, 'The system cannot find the file specified'), <traceback object at 0x021DB
300>)

[100% done, ETA 0:00:00]...

I hope it works for you.

I'm was using ImageMagick-7.0.0-Q16 which is weird because the site says the newest version is 6.8.7-8. I switched to 6.8.7-8 and that sure made something happen (when I ran the code you suggested). It's also possible I just had imagemagick installed in the wrong place though I didn't see convert as an exe in it's folder. Anywho...

New results:
C:\Python27\ArcGIS10.1>python Uniform_exposure.py

raw\_MG_3261.CR2:
--temperature=5500 --green=1
dcraw -c -h -4 'raw\_MG_3261.CR2'
convert - -type Grayscale -gravity Center  -scale 500x500 -format %c histogram:i
nfo:-
    midtones: brightness level  3665 => exposure +1.94 EV
  highlights: brightness level 61357 => exposure +0.72,-0.50 EV
     shadows: brightness level   629 => exposure +0.67 EV (skipping)
(midtones) (<type 'exceptions.WindowsError'>, WindowsError(2, 'The system canno
t find the file specified'), <traceback object at 0x021DAC88>)
(highlights (<type 'exceptions.WindowsError'>, WindowsError(2, 'The system canno
t find the file specified'), <traceback object at 0x021DAE68>)
. (<type 'exceptions.WindowsError'>, WindowsError(2, 'The system cannot find the
file specified'), <traceback object at 0x021DA788>)
) (enfuse) (<type 'exceptions.WindowsError'>, WindowsError(2, 'The system cannot
find the file specified'), <traceback object at 0x021DAE68>)

[100% done, ETA 0:00:00]...


I'm using enblend-enfuse-4.1.2-win64, and 64bit dcraw that I found here: http://www.fastpictureviewer.com/bin/dcraw.zip (v9.19/1.456, 2013/06/16, x86, x64).

Hey; thanks for the speedy reply. I didn't know that convert was a separate program (or about pipes).

If I run: C:\Python27\ArcGIS10.1>dcraw -h -4 raw\_MG_3261.CR2 it does output a *.ppm file (which I suppose is good).

But if I add the rest back I get:
C:\Python27\ArcGIS10.1>dcraw -c -h -4 raw\_MG3261.CR2 | convert - -type Grayscale -gravity Center -scale 500x500 -format %c histogram:info:-
raw\_MG3261.CR2: No such file or directory
Invalid Parameter - -type

It does the same if I run it on an image not in the raw folder:
C:\Python27\ArcGIS10.1>dcraw -c -h -4 _MG3260.CR2 | convert - -type Grayscale -g
ravity Center -scale 500x500 -format %c histogram:info:-
_MG3260.CR2: No such file or directory
Invalid Parameter - -type

Howdy a1ex, good show with DualISO it's impressive. I'm following in the footsteps of asthanaiitk and I am running into the same errors. The script said that it failed to create the output dir and working dir (though the folders did get created) and then I got the error below. I added print X as you suggested and it returned [].

C:\Python27\ArcGIS10.1>python Uniform_exposure.py
Warning: could not create output dir 'jpg'
Warning: could not create working dir 'tmp'

raw\_MG_3260.CR2:
--temperature=5500 --green=1
Invalid Parameter - -type
X
[]
Traceback (most recent call last):
  File "Uniform_exposure.py", line 277, in <module>
    mm, mh, ms = get_medians(r)
ValueError: need more than 0 values to unpack


After that I tried to print the lines under get_raw_data_for_median. It returned:

C:\Python27\ArcGIS10.1>python Uniform_exposure.py
Warning: could not create output dir 'jpg'
Warning: could not create working dir 'tmp'

raw\_MG_3260.CR2:
--temperature=5500 --green=1
dcraw -c -h -4 'raw\_MG_3260.CR2'
convert - -type Grayscale -gravity Center  -scale 500x500 -format %c histogram:i
nfo:-
Invalid Parameter - -type
Traceback (most recent call last):
  File "Uniform_exposure.py", line 277, in <module>
    mm, mh, ms = get_medians(r)
ValueError: need more than 0 values to unpack

I guess that means there is something off with '- -type'? I'm out of my league here.

Anywho... if I run C:\Python27\ArcGIS10.1>dcraw -c -h -4 raw\_MG_3260.CR2
I get: "Will not write an image to the terminal!" Hmmm. Any thoughts?

Way to go G3gg0. Good catch on that workaround inky38.