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roganl

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Posts posted by roganl

  1. <p>@Brett -You are absolutely correct. Having worked in prepress for several (5) years, I have had opportunity (if you can call it that) to do the above tests--and I encourage you to do the same. There is nothing like eating the pudding.<br>

    Information != Data. There is a distinction. Unprezzing cannot 'create' information, it can only interpolate existing data, to create more data. Fundamentally interpolation is creating an artificial relationship (as transitional a data set) between two or more pieces of information. In effect this destroys the clarity of the relationship between pixel values.<br>

    If the information isn't there, which at 25ppi it isn't, hope, prayer and uprezzing, are all much the same--use them if you want a warm fuzzy feeling all over and have time to devote. Or get out there and make another image.</p>

    <p> </p>

  2. <p><strong>Go Kelly!</strong> All that jibes with my 18 years of Photoshop experience.<br>

    1.) Output device resolution HAS NEXT TO NOTHING TO DO with input source image resolution. (it takes many dots of a few colors to approximate the millions of colors possible with 14/16 bit channel depths)<br>

    2.) Uprezzing (with bicubic/GFP) is a bad idea, period. <br>

    3.) Most output device drivers show little improvement in output clarity (but huge delays in output time) using input greater than the specced native resolution. Meaning don't ship 600 dpi to the inkjet, you're just wasting your time as it determines how to best throw out the information you're sending it.</p>

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