Poor image quality in pdf for Aperture book

Can anyone tell me how to retain the quality of original images when I export to PDF for book production in Aperture?
I am trying to produce a book with 11 pages, in large soft back format.  Most of the images are black and white, and all are PNGs.  Individual files size are typically 12MB - 20MB, and  the longer side of the images is mostly over 5000 pixels.  They all look very clean and crisp full screen in Aperture, and there are no warning triangles in the page make-ups to highlight any instances of poor resolution.
I’m producing the PDF, via ‘Print’ > ‘Save as PDF’.  The resulting file is 2.6MB.
Viewed in Preview, some of the images in the PDF superficially appear to be OK.  Some are not - and are very indistinct.  Zooming in on the images in Preview shows that very few are useable.
I produced a colour book, with larger pages last year and was very happy with both the PDF and the finished book in print.  Some example file sizes from that one were:  15.3MB (3950x2633) and 9.30MB (2880x 1920).
I had expected the black and white images to work even better. 
What am I doing wrong here?
I'm using Aperture 3.2.1 on a MacBook Pro running 10.6.8.

I just remade the same book - as a test - in the extra large hardback format (ie. the one I used for the previous publication, last year).
This time, the pictures are fine.  The images appear to be the same quality in the PDF as the originals - much, much better.  The size of the file has increased massively too > up from just 2.6MB to 52.8MB.
So does the books production function work well only with the biggest, most expensive option? 
I'd really appreciate some feedback from anyone who's tried the different sizes, and preferably some brilliant ideas to make them all work equally well.

Similar Messages

  • Poor image quality with save for web

    It doesn't matter whether i'm exporting from Ai or Ps or whether it's CS6 or CC. I have changed the raster settings in Ai and i've also tried all optimization options with all different export file types (jpg, png, gif) at all different quality settings. It doesn't matter if I start with an ai, eps, pdf, png... the export result is always poor quality.
    I have tried exporting at 300ppi and that does fix the quality issue and bloats the file size, but this way (the export route) is so time consuming since you have to resize your artwork each time as well as the artboard so that it doesn't cut off pixels. Save for web never used to have these quality issues and it also never used to cut off pixels around the edges. These workarounds prove very time consuming and produce file sizes that are not ideal.
    When i first noticed this issue I was using Mavericks with CS6 and since am using Yosemite and Creative Cloud.
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    Results:stair stepping, degradation, pixel trimming, general poor image quality
    Expected results: Previously the save for web feature allowed for a decent quality image

    I thought of that too so I tested on another machine with retina display and the file i saved on my machine looked bad on my machine and on the other comparable machine/display. So I sent them the original vector ai file and watched while they saved it the exact same way on their machine and the file looked fine on both of our machines/displays.
    All of the settings they used appeared the same as what I used but with different results. I don't recall changing anything but does anyone know if there is some setting that could have been changed that is causing this issue?

  • Poor Image quality upon PDF export

    hi,
    issue: images lose quality when viewed in PDFs
    i've searched/read these and other forums for the past few days and have tried just about every suggestion out there in order to get better quality images in my PDFs and nothing works.. it's as if everyone is talking some theory without actually testing/proving what they're saying.
    are pdfs inherently bad at handling raster images?
    i have a few 800x1200 px renders (tiffs/jpgs) that i'd like to include in a PDF.. i'm using A4 landscape orientation because when viewed at full size on a 24" monitor, it's the size i'd like it to be (i'm not concerned with printing this pdf.. monitor only)
    the images when view full size in the pdf are a bit smaller than viewing the original images full size however, the quality is a lot worse.
    honestly, i'll try or retry your suggestions but at this point, i'm more/less looking for an explanation as to why this happens because from what i can tell, it's going to happen no matter what
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    PeterBreis0807 wrote:
    Not sure what you are expecting.
    well, i'm certainly expecting better quality than what i'm getting..
    The jpg is contrasty and it is lower resolution than you need, but you did say that above. Which means I am not looking at what you are looking at.
    The color space is srgb and the conversion from the tiff would have reduced the quality a little or a lot depending on your settings.
    it doesn't matter if i use the original tiff or the jpg.. for all intents and purposes, let's forget i even have the tiff.. the jpg should look the same in the pdf (imo)
    Did you print to pdf or Export? If you exported, did you use "Best" as your setting.
    i've done all sort of methods.. but yeah, always at highest quality if said method allows such settings..
    It has lost some contrast and is a little blurry. It looks to my eye like the degradation you get from setting the jpeg quality a little low.
    well, no.. it has gone from something that is in focus to something that is out of focus.. if i open the jpg in photoshop and do a 'save as' jpg with the quality set to 3 (with 12 being best), i will get similar results as putting the jpg in a pdf.. (albeit, a different type of quality loss but just as bad)
    you've seen the comparison but just in case someone else wants to look, check here:
    http://homepage.mac.com/jeffhammond/Sites/imgs/origVSpdf.jpg
    that's a screenshot showing the jpg on the right and the pdf output on the left (both viewed in preview)..
    it's unacceptable.. but like i said earlier, i think this is an inherent aspect of pdfs and i'd settle for a decent explanation as to why it happens..
    OSX has some very smart frameworks built in, which do make bitmaps displayed on screen in Cocoa apps look better than they should. Not exactly helpful if you simply want to see it unenhanced.
    but still, if that's the case, why isn't osx doing the same thing to the pdf.. (and also, i highly doubt the actual quality of the image is being shown in the pdf but when i view the jpg, i'm being shown an enhanced view to the point of making an out-of-focus image being an in focus image.
    jeff

  • Aperture Light Table - Poor image quality

    I am using the Light Table function in Aperture (3.4.5.) and I had an issue with the quality of the images on it, when zoomed in or scaled to fit.
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    I just remade the same book - as a test - in the extra large hardback format (ie. the one I used for the previous publication, last year).
    This time, the pictures are fine.  The images appear to be the same quality in the PDF as the originals - much, much better.  The size of the file has increased massively too > up from just 2.6MB to 52.8MB.
    So does the books production function work well only with the biggest, most expensive option? 
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  • Poor image quality save for web

    It doesn't matter whether i'm exporting from Ai or Ps or whether it's CS6 or CC. I have changed the raster settings in Ai and i've also tried all optimization options with all different export file types (jpg, png, gif) at all different quality settings. It doesn't matter if I start with an ai, eps, pdf, png... the export result is always poor quality.
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    When i first noticed this issue I was using Mavericks with CS6 and since am using Yosemite and Creative Cloud.
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    3. View image in any application or browser to see poor quality and pixel trimming. Others running the same version and system are not having this issue, but I have checked many forums and found many others that do have this same issue but can't seem to find a solution.
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    Expected results: Previously the save for web feature allowed for a decent quality image

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