D-Link DCS-2330L

Best for Pools

This waterproof cam sits beside a pool and captures crisp shots in HD, even at night. Unlike other cams here, the D-Link did not require us to wrestle with the angle to get the best view – through the excellent mobile app you can choose any part of the live image and zoom in up to 10 times to help identify intruders. [$180; dlink.com]