Theverge review for the Nokia Lumia 1520 was off and disappointing but expected. The 1520 has the best camera hardware second only to the 1020 and xperia z1 is in the ball park though with lousy camera software. Another thing to remember Nokia phones take a couple of updates until the camera is performing at peak performance.
Nokia Lumia 1520 review | The Verge
Here is the link to the review
Nokia Lumia 1520 review | The Verge
Here is the link to the review