imagemagick convert dng - changes date modified

Question

Edit 26/04/2016 : This is a bug that has been fixed in ImageMagick-6.9.3-5 and 7.0.0-0

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Converting DNG files, when I run

convert "my_img.dng" "my_img_converted.jpg"

Imagemagick changes the date modified of the original my_img.dng to the time when conversion happened.

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Do you know how to avoid that and keep the original file intact?

Answer 1

I would say that is a bug! A workaround is as follows:

convert dng:- result.jpg < original.dng

Or, equivalently if you prefer reading left-to-right and don't mind superfluous processes:

cat original.dng | convert dng:- result.jpg