Comparison: iPhone X vs. Galaxy Note 8 video quality

Let's start the comparison with the front facing camera, the iPhone x has more detail, despite recording in lower resolution. The colors and highlight roll off is more natural, while the Note 8 brightens up the shadows underneath the eyes, which looks better.

Switching to 4K on the rear-facing camera, the iPhone is properly exposing the subject and shows more detail, visible on the street signs and facial hair. Here, the Note 8 is also underexposing, which provides for a more pleasing image. The iPhone could use some more contrast, but the exposure is more true to life.

Even though the iPhone X has a brighter exposure, it's still retaining more highlight detail in the clouds.