Eufy Video Doorbell S4 Review: One Lens Does the Work of Two, and It’s Subscription-Free
Video doorbells have spent years fighting the same problem: a porch is taller and wider than a camera can comfortably see. Eufy‘s last answer was the E340, which put a second camera on the bottom to watch for packages. The new Eufy Video Doorbell S4 goes a different way, with a single fisheye lens that covers 180 degrees both side to side and top to bottom, then uses AI to frame and follow whoever walks up. We swapped out our own E340 for the S4 to see whether one lens really can do the work of two.