TIFF LZW file size increased?

I'd like this handled by my expert colleagues of imagery. Created a very large TIFF of a painting that I photographed. The final tiff file without any compression was 645 MB (16-bit Prophoto RGB file). When I saved the same file for my client, this time adding compression LZW tiff file, everything the same, it's around 850 MB.

I do this on a Mac, the latest versions of Yosemite and Photoshop CC 2015.

I never noticed that by selecting compression LZW would increase the size of the file. Then... I'm deliver the file to my client without compression, because the file opens faster this way (and it's smaller!).

Anyone has an idea why LZW would increase the size of the tiff file?

Scott,

I think you can refer to link below for compression LZW in Photoshop.

Re: Recording TIFF with LZW compression results in larger file size.

See you soon!

Florian

Tags: Photoshop

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