This picture was created with 6 photos at 20s, ISO4000, F/2.0 with the Fuji x-pro1 and Samyang 12mm. I used Photoshop for align the 6 photos. The converted it to smart objet and use the stack option called "median". By doing the mean or median, you are separating the signal to the noise. If the relation between boh is bigger enogh, you can see more details in the nebulae in the astrophoto.