An observation on Tiff compression in OS6 and LR4.....

[bbbdco]

Can some one please explain this observation to me:

I took a flattened TIFF 16 image in CS6 and saved it with ZIP compression on my Mac computer.

I took the identical TIFF 16 image in LR4 and saved it with ZIP compression.

The results are as follows:

Size of original TIFF file: 83.1 MB

Size of TIFF saved with CS6 ZIP: 80.7 MB

Size of the same TIFF saved with LR4 ZIP: 69.7 MB

It's as if the LR4 version of ZIP compression works better than the CS6 version. Is this possible? I can't find any info on the internet to help me with this.

Dan