Why am not getting maximum image resolution

[kula]

I am writing a code in C# to read QR code using tablets camera. Currently using Aforge .Net library for capturing photo. Problem is, I can only get maximum resolution as 1280 x 720. But, when I use Metro Camera application, here I can the maximum resolution as 1600 X 1200. Why is that?

[Ammo]

Hi,
this is quite old but...
How is exposed your camera in peripherals manager (Windows)? As image acquisition or user interface?
Ammo