CR2 RAW file conversion

[jose.sanpedro]

well, i toke a better look and your code generates a better result. colors are better. but still different that the original, but i think i can work with this. thanks!

[snibgo]

If you are doing further processing, don't write to JPG. Use another format such as PNG or TIFF, with compression none or LZW or ZIP.

If you simply want a JPG image, you could just use the JPEG preview that is embedded in the CR2 file.

[jose.sanpedro]

how can i use the jpeg preview embedded in the cr2 file? i need jpeg output

[snibgo]

1. List metadata from exiftool:

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exiftool -s2 -all -b -X -fXMP:XMP foto.cr2

2. Near the bottom, it shows:

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 Composite:PreviewImage='(Binary data 1706501 bytes, use -b option to extract)'
 Composite:ThumbnailImage='(Binary data 17031 bytes, use -b option to extract)'

3. Use the "-b" option to extract either or both:

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exiftool -Composite:PreviewImage -b foto.cr2 >preview.jpg

exiftool -Composite:ThumbnailImage -b foto.cr2 >thumb.jpg

[Bonzo]

You can get the jpg preview using Imagemagick as well as I did it a few years ago, but can not remember how. I am sure I posted on a thread about it on the forum.
From memory it is in the EXIF data as snibgo said.

[jose.sanpedro]

thanks snibgo! thats awesome...just what i needed!