Read ultimately CreatorTool and resolution of photoshop cs5 eps files

tkittel · Post by **tkittel** » Wed Jul 11, 2012 3:39 pm

Hello all,

I'm trying to detect in switch 11, with which version of photoshop an eps file was ultimately saved.

The path to the embedded xmp data in switch (xmp:CreatorTool) shows "Adobe Photoshop CS2 Macintosh", which is identical with the entries checking with a text editor:

Adobe Photoshop CS2 Macintosh

But this eps file was saved in Photoshop CS2 the FIRST time.

Shouldn't it be also possible in switch, to read the photoshop version of the last modification date?

My eps file has exactly 16 entries, so I'm able to detect it with [Metadata.Text:Path="xmpMM:History/*[16]/stEvt:softwareAgent"]. But another file perhaps was saved 27 times, so I've to replace "16" with "27". Is it possible to place a wildcard instead, for always detecting the LATEST entry?

Strange to say, but looking to the enhanced metadata with photoshop "file -> fileinformation -> tab "advanced" -> basic xmp properties (http://ns.adobe.com/xap/1.0/)" the xmp:CreatorTool shows "Adobe Photoshop CS4 Macintosh" (instead of CS2 shown in the text editor)! Why?

Furthermore I'm not able to detect the [Image.XResolution]/[Image.YResolution] in eps files saved with photoshop cs5. These informations seems to be coded or missing and similar xmp metadata seems not to be created with photoshop cs5 (or CS5.5). (By the way: bridge cs5 isn't able read resolution values, too!)

Is there any way to detect the resolution in photoshop cs5 eps files with switch11?

Thanks in advance,

Thomas

dkelly · Post by **dkelly** » Wed Jul 11, 2012 6:09 pm

Use [Metadata.Text:Path="xmpMM:History/*[last()]/stEvt:softwareAgent",Dataset="Xmp",Model="XMP"]

If you want to just get the "CS?" version number use

[Metadata.Text:Path="xmpMM:History/*[last()]/stEvt:softwareAgent",Dataset="Xmp",Model="XMP",Search="CS."]

Dwight Kelly

Apago, Inc.

dkelly@apago.com

tkittel · Post by **tkittel** » Thu Jul 12, 2012 8:49 am

Hello Dwight,

thank you for your solutions - both are working fine!

)

Knowing the correct keywords, now I also could find it in the reference guide. ;o)

So there's still my problem with the missing resolution values with phtoshop cs5 eps files. I found some similar questions in the www, but no answers. Could it be, that Adobe doesn't support this ancient pixel eps format anymore since CS5 or is there a trick, to detect the correct resoltion values with switch?

dkelly · Post by **dkelly** » Thu Jul 12, 2012 3:57 pm

In theory, Postscript and PDF are resolution-independent. Obviously, if you saved a picture in EPS using Photoshop it has a native resolution. However, this information is not stored in the EPS header or XMP metadata. You would have to parse the EPS BoundingBox header to obtain the physical size and the Postscript code to find the pixel size of the image to obtain the resolution.

A hack would be to distill the EPS to PDF, obtain the resolution information using PitStop, PDFInspektor or PDFspy, and throw away the PDF (if not needed)

tkittel · Post by **tkittel** » Fri Jul 13, 2012 7:53 am

Hello Dwight,

thank you very much for your detailed explanations. Now I understand all the posts about different resolution values in several applications with the eps format.

I've to think about: what our needs are and where to place the focus.

Have a nice day,

Thomas