Opening custom-size DNG files.

Microfunguy

4037

« on: 25 / December / 2009, 17:03:33 »

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Using a modified version of CHDK, I am creating an in-camera DNG image from parts of eight separate images.
Obviously, the header contains modified information.

RawTherapee, Picasa and IrfanView open the DNG files but CS4 does not.

How do I open the DNG files with CS4 ?

David

« Last Edit: 25 / December / 2009, 18:47:40 by Microfunguy »

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ewavr

1057
A710IS

Re: Opening custom-size DNG files.

« Reply #1 on: 25 / December / 2009, 20:02:08 »

Quote from: Microfunguy on 25 / December / 2009, 17:03:33

RawTherapee, Picasa and IrfanView open the DNG files but CS4 does not.
How do I open the DNG files with CS4 ?

Photoshop uses "camera raw" plugin for opening dng files. If this plugin works correctly, probably your file has some invalid tags . Dcraw (=RawTherapee, Picasa, IrfanView) is less strict than Adobe and can open such files. You can validate dng file using dng_validate.exe tool from Adobe DNG SDK and/or upload such file somewhere.

« Last Edit: 25 / December / 2009, 20:04:49 by ewavr »

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Microfunguy

4037

Re: Opening custom-size DNG files.

« Reply #2 on: 26 / December / 2009, 11:00:08 »

Quote from: ewavr on 25 / December / 2009, 20:02:08

probably your file has some invalid tags .

CS4 did not like me using the real ActiveArea of the sensor.
I had to set it to the size of the synthesised image.
I then had to define a suitable crop size and crop origin.

Incidentally, the dng verifier produced these warnings :-

DateTime is not a valid date/time
DateTime is not null-terminated
DateTime has non-ASCII characters.

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