Better images?

Looks like image2 is a gray16 image.

![image1](https://f.cloud.github.com/assets/27136/2206088/63e099ca-995b-11e3-9cd2-9556689c7ff2.png)
![image2](https://f.cloud.github.com/assets/27136/2206090/693787d0-995b-11e3-973b-7e498e6e88e5.png)