Luminous Landscape Forum

Raw & Post Processing, Printing => Digital Image Processing => Topic started by: bjornaagedk on June 16, 2006, 04:40:49 pm

Title: Zipped Tif files loose quality?
Post by: bjornaagedk on June 16, 2006, 04:40:49 pm

Does anyone know if image quality is exact the same of a zipped TIF vs. a non-zipped ditto?
Is it a lossless compression like LZW ?

Title: Zipped Tif files loose quality?
Post by: Schewe on June 16, 2006, 04:46:32 pm

Lossless...

Title: Zipped Tif files loose quality?
Post by: bjornaagedk on June 16, 2006, 04:53:24 pm

Quote

Lossless...
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By "Lossless..." - do you mean that LZW-cpmpression isn't lossless??

I am asking because my customer wants me to zip my tif files before transmitting via FTP.
I never use any compression of tif because in my eyes any compression means throwing out image data from the original file.
But what is the fact here... am I right that any compression method affect image quality and has to be avoided for maximum possible image quality?

Title: Zipped Tif files loose quality?
Post by: DarkPenguin on June 16, 2006, 05:05:53 pm

It is lossless compression.  You lose nothing other than file size.