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PhotoShop EPS w/JPEG Formatt

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Paul Hendee

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Nov 18, 2002, 3:46:54 PM11/18/02
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When one saves a file as a PhotoShop EPS, a window will pop up allowing the user to change the Preview to JPEG and the Encoding to various forms of JPEG compression. When changing the encoding to JPEG with Best Compression, does it degrade the final image ouput to a high end Contract Proofer?

JasonSmith

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Nov 18, 2002, 4:12:58 PM11/18/02
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"does it degrade the final image ouput to a high end Contract Proofer? "

yes, you are basically saving as a jpeg file at that point.

Jay Chevako

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Nov 18, 2002, 4:18:54 PM11/18/02
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don't save with jpg encoding, it does degrade the image.
Jay


Doug Katz

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Nov 18, 2002, 5:29:58 PM11/18/02
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Guys, he's not talking about saving in jpg format. He wants to know about saving a jpg PREVIEW in eps format. Doing so does NOT degrade the image pixels.

In fact, jpg may be the BEST preview option because it provides 24 bit color — vs. 8 bit by the other Mac preview— and it compresses! The only downside is that you need Quicktime to view this preview.

(I'm assuming the "high end Contract Proofer is a Postscript device.)

JasonSmith

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Nov 18, 2002, 9:16:18 PM11/18/02
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"user to change the Preview to JPEG and the Encoding to various forms of JPEG compression."

yes he said preview but he also mentioned encoding, which I was referring to. But Doug has a great point that there is a difference between the 2.

the preview doesnt affect the file itself, but the encoding does.

Just_A_Mac_Guy

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Nov 19, 2002, 11:22:39 AM11/19/02
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Many people get away with Jpeg preveiws and encoding, which creates a much smaller file, but some PS level 2 RIPS and imagesetters do not separate these files. Test your existing setup before commiting to this type of workflow.

One of our "Design" clients uses jpeg previews and encoding so that their illustrator pagelayouts are small and print fast to their proofer. Yet on their work order they instruct us to resave as full eps's which can quadruple or more the file size. Then they complain about the added processing cost at the back end...

If it works, go for it. If it doesn't ... Wait for it...{ and the bill}

JasonSmith

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Nov 19, 2002, 2:42:39 PM11/19/02
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"although many artists have assured me that an Encoding setting of JPEG (maximum quality) will have so minimal an effect as to escape the notice of even the most discerning eye."

I used to be of that school of thought, but I have since changed my mind after seeing it in real life.

with actual 'real' images it isnt that bad, but gradients can suffer drastically.

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