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mobly
mobly
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dual resolution images

Sep 20, 2012 8:30 AM

watched the R23 update yesterday, understand that we create 2 images one at std res and another named exactly the same but in a different folder, Can someone let me know the naming convention and folder structure for the 2 differents image folders etc.

Hope thats clear!

 

cheers

Alistair

806 Views   10 Replies   Latest reply: mobly, Sep 21, 2012 9:57 AM
 
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  • Bob Bringhurst
    3,424 posts
    May 29, 2007
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    1. Bob Bringhurst,
    Sep 20, 2012 9:00 AM   in reply to mobly
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    See this article and let us know if you have questions:

     

    http://help.adobe.com/en_US/digitalpubsuite/using/WS804da476e1fb25e627 6784b6139c71bed03-8000.html

     
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  • mobly
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    2. mobly,
    Sep 20, 2012 9:11 AM   in reply to Bob Bringhurst
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    Thanks Bob, nothing to mention about normal images. Strangley I've had more comments about the quality of images being poor on iPad3 over text, even though I think the text is worse. Anyway, I had hoped that having dual folders for SD and HD images would create some kind of clever kind of OPI for just a normal image, rather than pano's or slide shows. I don't suppose it works the same way does it? Or should we go down the route of creating a std size folio, and just put in HD images, and let the PDF do the work, so to speak?

     

    Cheers

    Alistair

     
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  • Bob Bringhurst
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    May 29, 2007
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    3. Bob Bringhurst,
    Sep 20, 2012 12:22 PM   in reply to mobly
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    When you create a 1024x768 v23 folio, the standard (non-interactive) images in PDF articles are output as 108 ppi instead of 72, which should result in improved clarity without affecting performance. Have you tried creating a folio with multi-rendition PDF articles? Let us know what you find.

     
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  • Bob Levine
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    4. Bob Levine,
    Sep 20, 2012 12:26 PM   in reply to mobly
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    I haven't tested this yet but I would think that if you have an image that is absolutely essential to the presentation and want it to be HD on the iPad 3 you could create an image sequence out of it using two identical images for the SD devices and then add the HD assets. It would appear static but you'd get the benefit of HD.

     

    If you decide to try it let me know how it works.

     

    Bob

     
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  • Johannes Eckert
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    5. Johannes Eckert,
    Sep 20, 2012 1:05 PM   in reply to Bob Levine
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    that is an awesome (but awkward) workaround, Bob L!

     

    —Johannes

     

    (mobil gesendet)

     
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  • Bob Levine
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    6. Bob Levine,
    Sep 20, 2012 1:39 PM   in reply to Johannes Eckert
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    Let’s face it, Johannes…this whole damn thing is a workaround.

     

     

     

    Sure keeps the mind sharp though, no?

     

     

     

    Bob

     
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  • mobly
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    7. mobly,
    Sep 21, 2012 3:10 AM   in reply to Bob Levine
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    Thanks Bob L

    might try that, though some of my projects have a lot of images, so I would be worried that doubling up the images to make an image sequence, could quickly make the folio too big. Or I wonder, as in the old days of postscript print, if I used the same file many times, it would only get "processed" once - also a bit like flash; use the same asset lots of times, does not increase file size? Oh if only I had the time to try out all these things!!

     

    thanks everyone

    Alistair

     
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  • mobly
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    8. mobly,
    Sep 21, 2012 3:17 AM   in reply to Bob Bringhurst
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    thanks Bob, I'm slightly confused about your ppi setting. When I first started creating content with DPS, I used to save my images at 133ppi, but everyone said not to bother, but in those days we didnt have the PDF format. Does the jpeg/png formats get saved down to 72ppi then? if ppi does make a difference (which I always thought it would!) strange that from the outset our files would get rendered down to 72ppi. Was it purely file size?

     

    cheers

    Alistair

     
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  • Bob Bringhurst
    3,424 posts
    May 29, 2007
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    9. Bob Bringhurst,
    Sep 21, 2012 9:41 AM   in reply to mobly
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    At that time, there was only the iPad 1, so creating anything larger than a 1024x768 background image with 72 ppi was overkill. Now, with HD devices and PDF pinch/zoom, using a higher resolution for background images is warranted.

     
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  • mobly
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    10. mobly,
    Sep 21, 2012 9:57 AM   in reply to Bob Bringhurst
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    but iPad1 was still 133ppi, .....even so I really couldnt see the difference between the images 133ppi compared to just 72ppi. I'll definetely do some tests and report back!

    cheers

    Have a great weekend everyone!

    Alistair

     
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