With the DimensionPlus API, code jockey's can develop third party apps that benefit from the ability of a photograph to display a different angle than the one used in the original shot. By tilting the phone while the phone is on the screen, you can see the same subjects from a different angle even if you took only one picture.
It should be interesting to see how developers employ Duo Camera in their apps written expressly for the HTC One (M8). If you're a developer interested in writing for the Taiwan manufacturer's new camera setup, click on the sourcelink below.
HTC makes APIs for DualLens and DimesnionPlus available to third party developers
1. Change in background focus
2. Change the focal point from background to foreground
3. Foregrounder effect
4. Change the angle of a picture
source: HTCdev via Engadget