Continuous tone image resolution lower than specified
myDwayneSmith Feb 4, 2009 2:51 PMI found this in the Archives and an explanation/resolution was never posted.
I've just run into the exact same problem running CS2 on a Mac and I've isolated the cause in my case so I'm posting this as information only (not a question)
b Original Post --------------------------------------------------------
Amy Watson - 08:30am Apr 28, 2008 Pacific
The following message was posted in the incorrect forum; no legitimate solution to the problem was ever posted. I am re-posting it, as this is the same exact problem I am having, right down to the OS and version of Acrobat. Could someone please explain to me what this means and whether or not I should be concerned about it? I will also get two different kinds of results... one is a single number effective ppi on this error, such as 199, (which results in 200ppi if run through PitStop), and a two-number effective ppi, which we haven't been able to decipher, such as 501.357/179.55ppi (which should be a hi-resolution image).
Help?
Amy Carolyn Watson
>
>
>Nikola Viereckel - 09:45pm Dec 9, 2007 Pacific
>
>Hi - I have recently discovered the above error message when I
>check my distilled press quality pdf in preflight. I am using
>a PC and Version 7.0 of distiller and acrobat. The images are
>300dpi and are in my documents at 100% or lower, so there should
>be no resolution issues. The pdf itself looks fine, but the
>preflight does not. I find if I export out of InDesign (CS2)
>then I do not get the same error message, but this is not my
>preferred way to create pdfs for print.
>
>Any ideas? I the only thoughts I have had is to reinstall
>the program. Thanking you in advance for your help.
>Cheers
>Nikola
b End Original Post --------------------------------------------------------
I have a single image in an InDesign document giving me this problem the image is huge but Acrobat is telling me the resolution is too low. I'm getting almost identical readings to Amy around 500ppi/180ppi
Aandi Inston suggested opening the PDF in Illustrator may illuminate the problem.
Illustrator indicated to me that the problem image was disproportionately scaled (14% x 40% which explains the dual resolution reading in Acrobat) problem is, this is NOT the case. Image in InDesign is scaled proportionately to 16.5%
Long story short after lots of testing I found that the issue arises with any image scaled to below 60% AND flipped. Just below 60% is OK and just flipped is OK but both together causes an issue. And it is irrespective of whether the frame is flipped or the image within the frame is flipped.
Hope this helps someone else
d.
I've just run into the exact same problem running CS2 on a Mac and I've isolated the cause in my case so I'm posting this as information only (not a question)
b Original Post --------------------------------------------------------
Amy Watson - 08:30am Apr 28, 2008 Pacific
The following message was posted in the incorrect forum; no legitimate solution to the problem was ever posted. I am re-posting it, as this is the same exact problem I am having, right down to the OS and version of Acrobat. Could someone please explain to me what this means and whether or not I should be concerned about it? I will also get two different kinds of results... one is a single number effective ppi on this error, such as 199, (which results in 200ppi if run through PitStop), and a two-number effective ppi, which we haven't been able to decipher, such as 501.357/179.55ppi (which should be a hi-resolution image).
Help?
Amy Carolyn Watson
>
>
>Nikola Viereckel - 09:45pm Dec 9, 2007 Pacific
>
>Hi - I have recently discovered the above error message when I
>check my distilled press quality pdf in preflight. I am using
>a PC and Version 7.0 of distiller and acrobat. The images are
>300dpi and are in my documents at 100% or lower, so there should
>be no resolution issues. The pdf itself looks fine, but the
>preflight does not. I find if I export out of InDesign (CS2)
>then I do not get the same error message, but this is not my
>preferred way to create pdfs for print.
>
>Any ideas? I the only thoughts I have had is to reinstall
>the program. Thanking you in advance for your help.
>Cheers
>Nikola
b End Original Post --------------------------------------------------------
I have a single image in an InDesign document giving me this problem the image is huge but Acrobat is telling me the resolution is too low. I'm getting almost identical readings to Amy around 500ppi/180ppi
Aandi Inston suggested opening the PDF in Illustrator may illuminate the problem.
Illustrator indicated to me that the problem image was disproportionately scaled (14% x 40% which explains the dual resolution reading in Acrobat) problem is, this is NOT the case. Image in InDesign is scaled proportionately to 16.5%
Long story short after lots of testing I found that the issue arises with any image scaled to below 60% AND flipped. Just below 60% is OK and just flipped is OK but both together causes an issue. And it is irrespective of whether the frame is flipped or the image within the frame is flipped.
Hope this helps someone else
d.

