Material is too dark in AR I have a 3D model of a chair which I want to use for an Augmented Reality App. In Object Mode and AR Quick Look (Mac) the colours look fine. In render mode (cycles render) and when I place the object in my AR app (iOS), the colours of the material are too dark. 

Can somebody help me and explain how I can fix this problem?

Thanks!

Edit: I have added light sources which brighten up the render image but don't effect the object brightness within my AR App.
If the albedo are reasonable, the problem is your light transport in your AR API. Specifically, it is literally too dark in the estimated scene. Unsurprisingly, given how janky AR is.