2005.08.04 15:36 "Re: [Tiff] tiff unknown field of tag", by Steven Woody

"Joris" <joris.at.lebbeke@skynet.be> writes:

> Steven,
>
>> i got back some scaned tiff's from a photo lab. openning with xv or gimp

>> just got a warning message: unkown field of tag 34665(0x8769). i want to know >> what's wrong with thoese files and how do a work around.

> The warning is to be regarded as quite harmless. Any unknown (private) tag will > generate that warning, but by definition, a private tag should not contain

> crucial data if the image is proper TIFF intended for interchange.

so i changed my qustion to how do i suppress the warning messages of 'xv' when it counts unkonwn tags? its really borning and disturbing.

>
>> 1. what means "ICC Profile: <present>"? and what is ICC?
>

> There's a tag directory you can consult, with a search page that responds to the > decimal tag code or even search query like 'icc' or any somesuch:

>
> http://www.awaresystems.be/imaging/tiff/tifftags.html
>

> The ICC Profile tag page that you can thus find contains a short decription,

> which in this particular case is pretty useles for you, as well links to the ICC > specification and the mother of all open source ICC (color management)

> libraries.
>
> http://www.color.org/ICC1-V41.pdf
> http://www.littlecms.com/
>
>> 2. i noticed this file is uncompressed. so what's the benefit the lab save
>> result in tiff rather than a bmp?
>

> I wouldn't know where to start, all depends on your application which of many

> dozens of advantages, and dissadvantages, that are relevant for you. Perhaps you > may find the short introduction to the format in the TIFF FAQ useful:

>
> http://www.awaresystems.be/imaging/tiff/faq.html#q1

thank you. i will read it.

Joris Van Damme
info@awaresystems.be
http://www.awaresystems.be/
Download your free TIFF tag viewer for windows here:
http://www.awaresystems.be/imaging/tiff/astifftagviewer.html

--
steven woody (id: narke)

Virginia Woolf: You cannot find peace by avoiding life, Leonard.

- The Hours (2002)