Tiff saving options

in cs2 there is the additional option when saving a file as a Tif - Pixel Order - either interleaved or per channel.

can someone tell me why to choose one over the other - and if relevant which saves a higher quality image

hope this isnt a question that's already been asked several times

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In article <8kkWe.3318$>,
"frankg" wrote:

can someone tell me why to choose one over the other - and if relevant which saves a higher quality image

It makes no difference which you choose. One does not produce a "higher quality" image than the other--TIFF files, unless you specify JPEG compression, are lossless and bit-for-bit perfect in quality.

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Art, photography, shareware, polyamory, literature, kink: all at http://www.xeromag.com/franklin.html

can someone tell me why to choose one over the other - and if relevant which saves a higher quality image

It makes no difference which you choose. One does not produce a "higher quality" image than the other--TIFF files, unless you specify JPEG compression, are lossless and bit-for-bit perfect in quality.

do you know what the option for this is about then - Pixel Order - either interleaved or per channel.

tacit wrote:

In article <8kkWe.3318$>,
"frankg" wrote:

can someone tell me why to choose one over the other - and if relevant which saves a higher quality image

It makes no difference which you choose. One does not produce a "higher quality" image than the other--TIFF files, unless you specify JPEG compression, are lossless and bit-for-bit perfect in quality.

If it makes no difference, why is it there? I too would like an answer. The pixel order may not matter for quality, but it must matter for some reason.

I'm guessing Adobe put it in there because it will make a difference somewhere sometime. Maybe we should rephrase the question to say: Where and in what situations would the pixel order in a TIFF make a difference?

Clyde

In article ,
Clyde wrote:

If it makes no difference, why is it there? I too would like an answer. The pixel order may not matter for quality, but it must matter for some reason.

What it means is this:

Let's say your image is RGB. "Interleaved" means that one byte of Red information is saved, then one byte of Green, then one byte of Blue, then the next byte of Red, then the next byte of Green, then the next byte of Blue, and so forth. "Per channel" means all the bytes for Red, then all the bytes for Green, then all the bytes for Blue.

What difference does it make? For almost all intents and purposes, none. The only time it's likely to matter is when you have written, or you are using, some custom computer program that expects the information to be presented in a certain way and does not know how to read all the TIFF tags. It's unlikely you will find such a program unless you've written it yourself or you're using some very obscure code, possibly part of an image manipulation package for an obsolete mainframe or similar application.

--
Art, photography, shareware, polyamory, literature, kink: all at http://www.xeromag.com/franklin.html

tacit wrote:

In article ,
Clyde wrote:

If it makes no difference, why is it there? I too would like an answer. The pixel order may not matter for quality, but it must matter for some reason.

What it means is this:

Let's say your image is RGB. "Interleaved" means that one byte of Red information is saved, then one byte of Green, then one byte of Blue, then the next byte of Red, then the next byte of Green, then the next byte of Blue, and so forth. "Per channel" means all the bytes for Red, then all the bytes for Green, then all the bytes for Blue.
What difference does it make? For almost all intents and purposes, none. The only time it's likely to matter is when you have written, or you are using, some custom computer program that expects the information to be presented in a certain way and does not know how to read all the TIFF tags. It's unlikely you will find such a program unless you've written it yourself or you're using some very obscure code, possibly part of an image manipulation package for an obsolete mainframe or similar application.

Thank you.
Clyde