The P-1000 is much larger and heavier than the P-900. The viewfinder is much clearer, the automatic focus is better and faster, and it has a manual focus ring which I depend on a lot. It also can store images as raw, but I don’t have any software which understands Nikon raw image format. So far, so good.
Two inches
50 feet
3.0 Miles
93,000,000 miles