DPI Trouble

You haven't said, but are probably referring to the pdf output from Pages being only 72dpi, which unfortunately is the default in OSX.

To change that see this reference:

http://www.freeforum101.com/iworktipsntrick/viewtopic.php?t=22&highlight=dpi&mfo rum=iworktipsntrick

Peter

Is it images you want to change? Do that in a graphic editor. Remember that if an image has a lower dpi it will nt look better in 300 dpi.

Is it the PDF exporting you are thinking of?

It would really help if asker described what they want to achieve as there are several answers and it is trying to guess.

> Pages has the means to set color intents in the Color Selector palette, but exactly how this is executed in final .pdfs is not documented.

Selecting ICC profiles per object, yes. Selecting deviceColor per object, yes. Selecting the ICC rendering intent per object, including cross-rendering from Perceptual for print to Relative Colorimetric or Absolute Colorimetric for proof, no (or I need new glasses, which is of course possible).

> pdf output from Pages being only 72dpi

Technically there is no such thing as a single resolution for several objects in PDF, unless this is enforced by the user or by the PDF creating software. PDF is object-oriented, that is, each object can have its own resolution, its own colourant format, and its own colourimetry space.

If you draw a circle, you can specify the stroke and colour of the path in one colourant format (e.g. CMYK) and associated device colourimetry space (MyPress.ICC) and the fill in another colourant format (e.g. RGB) and associated device colourimetry space (MyMonitor.ICC).

What you are talking about is that PDF 1.4 and higher supports device-independent opacity operators whereas PDF 1.3 and lower, PostScript and Encapsulated PostScript do not. Therefore, the device-independent opacity operators have to be rendered to a device-dependent resolution by the PDF creator.

This rendering does not involve any and all objects in a given PDF, but only those objects that are in a stack where opacity is set for one or more objects. You can configure a custom conversion filter, called a flattening filter, in the ColorSync Utility which will work, whereas cloning Apple's filter or using it as is will not work.

That is, either cloning Apple's filter or using Apple's filter as is will produce Apple's default 72dpi resolution.

With regard to whether Apple software storing ICC profiles differently in PDF than does Adobe software (or for that matter, Microsoft software), as mentioned in the external hyperlink above, what is the behaviour that prompts this mention?

/hh