LZW compression: C1 vs PS

stefano candito

• 18. Oktober 2021 19:34

Good day,

Why the same TIF file compressed with C1 is about 30% larger than the same compressed with Photoshop?

Thanks,

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  Ron Corso

  • 25. Oktober 2021 15:58

  I inquired about that a couple of years ago and was told the type of LZW compression used in C1 is a different type that is compatible with all applications but I have never seen any problems with LZW tiffs from Photoshop. Really a pain when you are trying to save some room on your drives or keeping upload sizes smaller for upload... I created an action in Photoshop to save as LZW. Really makes a difference if you have many final tiffs for delivery and archive.

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  stefano candito

  • 26. Oktober 2021 08:09

  thanks, me neither have ever heard about "incompatibility" of PS LZW.

  In my case it is not a personal storage problem but the client wants files that are smaller than those produced by C1, hence I have no other choice than going through PS, waisting a LOT of time.

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