I've noticed that if I place a photoshop PSD image into an InDesign file and then export that InDesign file as a PDF the resulting image in the PDF has its colours washed out or its contrast looks off.
If I export the image from a PSD to a JPEG first, then place the JPEG into the InDesign file and export the InDesign file as PDF the resulting image in the PDF is much truer to the image when viewed in photoshop.
Both the JPEG and PSD are saved as RGB, and the PDF is CMYK, but i wouldnt have thought this would have mattered as the PDF export settings in InDesign ive set "convert to destination (preserve numbers)" in the colour output tab.
Why is this and is there anything i can do to use the photoshop files in indesign instead of having to export them as JPEGs first ?