does the s9 and 9+ have the same camera as in the s8

[Goosinurwife]

does it or did they make it better and i dont mean just the thingy they added that i forgot what it was

 

[SpookDroid]

Dual aperture? And nope, sensor is also different from the S8, allowing for better low-light shots AND slower slo-mo. This from the AC Blog comparison

The most substantial change in the Galaxy S9 is an all-new camera setup, comprised of a new "Super Speed" Dual Pixel sensor and a lens with a physically variable aperture. The sensor offers dramatically reduced grain and improved fine edge processing, which was a sore spot of the Galaxy S8 in low-light scenes. Speaking of, the move to an f/1.5 aperture also lets in more light in badly lit scenes, giving that improved sensor even more to work with. The result is notably improved low-light photography that's among the best in the industry. The new sensor also gives the Galaxy S9 a 960 fps super slow-motion mode, going well beyond the Galaxy S8 for a super dramatic effect.

https://www.androidcentral.com/samsung-galaxy-s9-vs-galaxy-s8