iPhone Camera Hardware Specs To Consider:
Improved Wide Angle Lens: With an overhaul of a new and improved 26mm equivalent focal length (a 2mm difference from the X's 28mm length), this completely re-engineered the image processing that automates exposure settings.
Improved Sensor: Because the camera posses a bigger sensor (1.4µm), this makes it almost 30% larger than the previous X model.
Wider ISO Range: A wider ISO means a higher sensitivity to light, but can still operate under harsh low-light conditions. We found this as a significant improvement from the iPhone X. The Xs is now from 24 ISO to 2304 ISO.
Long Exposure: A longer exposure settings up to 1 full second.
Minimum Exposure Changes: We read much longer minimum exposures on iPhone XS: wide angle and telephoto go from 1/91000th of a second to 1/22000th and 1/45000th.