Photoshop History: Adobe JPEG

PV
Posted By
Paul_Venditti
Jul 1, 2008
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297
Replies
2
Status
Closed
I have a data supplier that is using a version of Photoshop that writes "Adobe JPEG" files. Apparently these files comply with the JPEG standard but not to the JFIF format. For example, Adobe JPEG files support CMYK JPEG files.

I have reason to believe that Photoshop 2.5 or Photoshop 3.0 wrote these fils. Does anyone know if versions after 3.0 went to JFIF? Did Adobe abandon this format? Exactly when was it supported?

I’ve searched adobe.com and can’t find any reference to Adobe JPEG. These images are causing Java Advanced Imaging (JAI) to do bad things and that is giving us fits.

Most of what I’ve learned about Adobe JPEG came from the document at URL < http://www.fcla.edu/digitalArchive/pdfs/action_plan_bgrounds /jfif.pdf> (search for "Adobe JPEG"). Thank you in advance for any responses.

Paul

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Don_McCahill
Jul 2, 2008
I remember in the old days, up to PS5, at least, that if you made a CMYK jpg in PS, it showed up extremely weird in Explorer (but fine in Netscape, which was then still the leader). This may be due to the odd format you mention.
BH
BILL_HUNT
Jul 2, 2008
Paul,

Used all versions except 5.5 and now CS3, but do not recall Adobe JPG. As all my work was for print (until ver 6 time), I only used TIFF, or EPS, so I guess I just missed this. Probably there, all the time, but never used, or saw it. Learned something today – thanks. Though that does not help you with your problem.

I still have ver 4 on one machine for one client’s client and a special way of handling Spot Color. You mention 2.5 -> 3, but I’ll check 4. I also have all my discs from the beginning, but do not know if 2.5 or 3, will install, even on this stripped-down machine. If they will, I’ll see what is in the Save_As drop-down. If you do not find a workaround, and I can install that far back, AND one can convert to TIFF CMYK, I’d be glad to convert for you, into something that you could use. Finding old PS copies and machines to run them might be difficult nowadays.

Last, is my memory correct that ver 3.0 was flakey and one needed the 3.0.1 update to really get the program to run correctly? I probably have all of the PS updates but they’d likely be on old BU tapes. Depending on the type and format of that era’s tapes, I may, or may not be able to get to 3.0.1. I could also be confusing versions and updates – been so very long ago in computer years.

If you do not find a solution in-house, or from this board, contact me offline at infoAThuntphoto.com. (obviously, AT=@. Be sure to put Photoshop JPG in the Subject, so I don’t blow it away with MailWasher).

Good luck,
Hunt

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