Luminous Landscape Forum

Raw & Post Processing, Printing => Colour Management => Topic started by: dmerger on January 26, 2013, 03:17:44 pm

Title: Profile File Sizes - Why so Different?
Post by: dmerger on January 26, 2013, 03:17:44 pm

I have about 50 profiles installed on my PC.  Some are .icc, some .icm, and a few other types. The file sizes range from 1KB to 1,637KB.  Why such a big difference?

Title: Re: Profile File Sizes - Why so Different?
Post by: Schewe on January 26, 2013, 04:06:04 pm

Color space profiles like Adobe RGB are quite small. Output profiles–depending on how there are made can be larger because they must contain multiple rendering intents and by-directional tables. Input profiles (scanners, cameras) are smaller although not as small as color space profiles. This is normal and to be expected...

Title: Re: Profile File Sizes - Why so Different?
Post by: dmerger on January 26, 2013, 05:05:07 pm

That’s exacting what I’m seeing.  Thanks. 

Title: Re: Profile File Sizes - Why so Different?
Post by: Scott Martin on January 26, 2013, 07:32:19 pm

There are simple matrix based profiles that contain just a few data points and then there are table based profiles that contain a bunch of tables full of data that more precisely define the irregular characteristics of a device and how conversions are to be handled for each intent. Table based profiles can be made in various resolutions (larger or smaller tables) which also effects file size...