Gamut / Color space problems when using CGContextDrawPDFPage
I'm rendering a PDF file on iPad using core graphics.
The colors however look different to the PDF when opening it using OS X preview or acrobat.
Here is a picture with the left being from Acrobat, the right being in iOS simulator:
Does anyone have an idea what I could be doing wrong? I'm not doing anything fancy with my graphics context, except translation/scaling, clipping and then calling CGContextDrawPDFPage
(So far I have only tried on the iOS simulator. )
Solution
You need to use RGB profile, not CMYK profile.
You can transform your PDF with a Quartz Filter. It will integrate a new color profile in your document, like "Apple RGB".
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