Why are my project's drawables blurry?
<p>For some reason, the drawables in my app are blurry. This is especially apparent in menus when I put built-in system icons side-by-side with icons from my project's res folder.</p>

<p><img src="http://i.stack.imgur.com/Gezrp.png" alt="blurry project icon next to crisp system icon"></p>

<p>Here's an example. The left envelope icon is in my app's drawable-hdpi folder. It is scaled down, for some reason. The right one is using the built-in Android resources. As far as I can tell, they are the same 72x72px file--I copied the png straight from the drawable-hdpi folder in SDK to my project's drawable-hdpi folder.</p>

<p>Is there some special setting for drawables in my app that I'm missing?</p>
