In my personal opinion, if you are looking for a modern solution for an embedded device and you use anything but NETMF then you are wasting your time. Try to make a pin high or control PWM from WinCE/Linux/Android and you will know what I mean. On the other hand, if you want to play video and looking for a “windows” environment then NETMF is not the right tool.
Yes ChipworkX can run Linux just fine but why do so and lose the “embedded system value” of NETMF? There hare thousands of linux/wince modules on the market. GHI is 100% dedicated to NETMF.
Now to your question on camera, there are many options when it comes to cameras. If you have a serious commercial project then you can always call GHI and talk about options.