MGSV had realistic graphics (one of the first games with PBR) and handled it well. One of the devs had a GDC talk about their lighting approach, too.

In the game light/shadow (in addition to what outfit you're wearing, surface you're on, if you've showered recently and other factors) has an effect on your camouflage index. Unlike prior Metal Gear Solid games this is never shown as a value on-screen but instead communicated by clues from enemy reactions and sound cues, where eg. their animation will change to show they've noticed something suspicious from a distance.