I am using inDesign CS 6 and when I placed my image (tried it in jpeg/psd/pdf version), my image becomes very sharp and the quality was significantly degraded. In the screenshot below, the file is opened in both Photoshop and inDesign CS 6. Left is Photoshop and right is inDesign. You can see how the quality becomes horrible.
What did i do wrong? i used "Place" in inDesign to import the image.
In photoshop you are looking at the actual pixels, in ID you are looking at a lower-resolution screen preview. Do yo have the highest quality preview enabled? That will help. View > Display Performance > High Quality Display (the default is Typical, whchi is lower resolution). You can change this in the prefs to be the new default, or set it on an image-by-image basis.