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Wrong FOV on iPad 4

October 6, 2014 - 6:15am #1

Vuforia SDK Version: Unity -
Description with steps to reproduce:

We are building an augmented app, in which some real-world Objects (a city) are precicely overlayed by some virtual content. We recently upgraded to Vuforia Now everything worked fine when running the App on Ipad air, however on Ipad 4 the virtual objects do not match up perfectly (the farer away from the center/the marker, the worse). It seems like the vuforia camera is using a wrong Field of View, so that everything gets "distorted".

It's kind of hard to see the effect without a detailed real-life Scene on which the augmented stuff is projected, however it can be seen by taking a mid-sized cardboard box, measure it and recreate it in Unity and place an Image-Marker on the front. Now in Ipad Air the virtual Cube should somehow cover the real box, where on ipad 4 it does not align properly. Unfortunately i do not have the real-world city right here, but i made a demo project as described above, and although it does not align perfectly and is just a very rough setup, you can see the difference Ipad air/Ipad 4. I don't have any other stuff in the scene, just the cube and the Vuforia Plugin. 


"Correct" Ipad Air:



"Bad" Ipad 4:



By downgrading to an older Unity Version and Vuforia 2.8 everything was back to normal again.

Development OS (Mac OS X, Windows, Linux): Mac OSX -
Mobile OS and Version: IOS 7.1 -
Mobile Device Manufacturer and Model name: Ipad air/Ipad 4 -
Do the Vuforia Sample Applications show the same behavior?:

Wrong FOV on iPad 4

October 6, 2014 - 12:13pm #2
Topic locked