anyone using dcraw?

[tofsla]

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anyone using dcraw for M8 DNG files? what parameters you are using? do you like dcraw output over ACR?

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[amigadave]

I'm using UFRaw, which uses dcraw, and M8 files look great. Auto white balance is sometimes a problem, but the WB presets together with a bit of exposure adjustment and maybe a slight change to the tone curve are all that I find I need.

[johnalex141r]

anyone using dcraw for M8 DNG files? what parameters you are using? do you like dcraw output over ACR?

 

For my little setup for duping black and white negs I used, eg:

 

./dcraw -w -T L1002130.DNG

/usr/local/bin/convert L1002130.tiff -negate L1002130R.tiff

 

That gave me a black and white positive, tiff format, with white balance as per the

camera.

 

I have not done a lot with the images yet, though.

 

JohnS.

[4season]

I've used it quite a bit via ufraw too. My feeling is that it seems capable, but that it demands more know-how on the part of the user: Things do not automatically come out looking beautiful--quite the opposite! You will see all of the chroma noise and aliasing contained in the original. Quite a change from packages like Capture One or Silkypix which go beyond mere raw conversion by incorporating antialiasing, chroma noise reduction and unsharp mask functions, and they're certainly convenient.

[DaveSee]

I have tried C1 LE, UFRaw, Bibble, LightZone, among others and would agree with 4season that using dcraw alone and in concert with ImageMagick and NetPBM utilities as I do is one person's dream and another's nightmere.

 

I cannot be bothered with mouse clicks, sliders and staring at a screen for long hours, so I spent many hours hacking a script to process my DNGs.

 

My dcraw command is:

dcraw -v ${WBF} -q 3 -4 \

${RAWPROFILES} \

-c ${DNGFILE} 2>> ${IMGDESTDIR}/process.log | \

 

with output pushed through pnmgamma, convert and exiftool. The variables and options translate to "use DNG WB data, AHD algos in the de-mosaicing, output 16bit data with no gamma curve nor blackpoint setting, skip the ICC profile and just spit out data to stdout".

 

rgds,

Dave