Samsung Galaxy S9 and S9 Plus cameras: Everything you need to know
https://www.cnet.com/news/samsung-galaxy-s9-and-s9-plus-cameras-ar-mwc-bixby/
New software, hardware and processing add up to a few key differences. We won't know how big of an impact they'll really make until we write our full review. But I can tell you the key things to keep in mind and what those cameras felt like when I tried them out.
If you want "the best camera" this cycle, get the S9 Plus. It has dual 12-megapixel cameras, much like the Galaxy Note 8 last year. One has 2x zoom and one has 1x, both have optical image stabilization. The S9 has a single 12-megapixel camera.