I'm using IndesignCS6 under Mac 10.9.2
I was trying to put an transparent image on another image,
but the background image always become lighter since I import the transparent image,
(I thought it might just show like that in Indesign, but it looks the same after I export it as pdf)
this problem also happen when I set the effect to "multiply" to an object.
Could anybody help me?..
When your transparency blend space is set to CMYK adding transparency to the page forces a CMYK preview—same as turning on Overprint or Separation Preview.
Got it...Thank you!