2008.12.11 00:12 "[Tiff] TIFF sample images updated", by Bob Friesenhahn

2008.12.17 16:22 "Re: [Tiff] Extracting layers from a TIFF file", by Toby Thain

On 17-Dec-08, at 10:54 AM, Gerben Vos wrote:

Our tiff files are created in Photoshop composing of several layers (50 +) and then saved in a tiff file.

Now I have to write code to separate each layer information embedded in the tiff file and GENERATE A SEPARATE FILE for each layer. Or in other words decompose the combined layers

Layers do not exist in standard TIFF.

Because TIFF is very flexible and extendable, it is possible that Adobe has defined a method to store layers in TIFF. This would be non-standard, which is perfectly fine by the way. However, I do not know about how they did it, and I get the impression that most people on this mailing list do not.

Look on Adobe's web site, or ask them.

It is actually quite likely that when you save a PSD to TIFF, the layers information is not saved at all to the TIFF.

It can be; as you surmise, Adobe supports TIFF as an alternative layered format to PSD/PSB.

Chris Cox of Adobe already replied that the OP obtain the Photoshop SDK as a starting point, but I would expect an interesting journey of trial, error and reverse engineering as well. :)

--Toby

>

Maybe we can help you a little bit further if you post the output of

> the "tiffinfo" utility, applied to your TIFF, to the mailing list