Which version of InDesign are you seeing this issue in danni95?
I can't replicate the issue in InDesign CC (2014.1 Release).
However, am thinking what you are seeing is related to the display of transparency. If the InDesign document were to be converted to PDF v1.3 (Acrobat 4 compatibility) or EPS, the text will be outlined, and the text frame area will become a rasterized region.
There's a couple of things you could do to check all is OK, and things are merely a display issue.
- Open up the Effects panel (Window > Effects) and ensure that the 70% opacity on Text is the only setting applied. No other Effects, Blending Modes or Opacity settings applied elsewhere?
- View the document with Overprint Preview enabled (View > Overprint Preview). Do you still see the issue? If it disappears, I'd not be too concerned with the issue, as in final output things will be OK.
- Thirdly you can try using the Flattener Preview panel (Window > Output > Flattener Preview), to further isolate the issue.
I am also using the 2014.1 version. I did all 3 things you suggested and the image is still lightened in the preview modes. I've also talked to Adobe Care on Twitter about the issue and they couldn't replicate it either. Think I'm just going to give up! Thank you for the help.
Try Edit/Transparency Blend Space/Document RGB