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Rotate photos using exiftool and AppleScript
Authored by: nperry on Oct 26, '09 12:11:48PM

If you are using iPhoto the suggested jpegtran is better than exiftool.

At least with iPhoto'08 if the orientation flag is set on an image then iPhoto will generate an internal "edited" version with the image rotated, rather than simply display the original image rotated on-the-fly. While the original image is kept the internal one is also, doubling your disk usage.

Using jpegtran losslessly rotates the image data and iPhoto does not generate its internal "edited" version.

You can use jpegtran to rotate images whose orientation flags are correct (i.e. if the orientation flag indicates image is rotated the data can be rotated and the orientation flag set to indicate no rotation). This has the dual benefit of saving disk space in iPhoto and supporting those programs which don't understand the orientation flag.

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