Here are a couple of photos I took with my Lumia 820 using ProShot (that app is absolutely UH-MAZING!)
First image: Considering that this was taken through a window of a fast-moving train, I thought this came out quite well with lots of detail.
The whites are a bit washed out here, but it was really sunny and I haven't exactly got the hang of all the ProShot settings yet. But I LOVE the colours in the sky.