Display expert explains why Apple Watch sapphire crystal degrades image quality

After putting the stainless steel Apple Watch through a barrage of excruciating screen benchmarks, display expert Raymond Soneira of DisplayMate Technologies has determined that its sapphire protection actually degrades image quality. But it’s not Apple’s fault, really. Even though sapphire is the second-hardest transparent material after diamond, the substance suffers from a higher reflectance versus a less expensive ion-strengthened […]