Not much is known about Dyar. A cinematographer in the early 1920s, he was a still photographer at Paramount from the mid-twenties, taking pictures of the likes of Clara Bow, to 1933, when he left for more money as head of the portrait department at Fox; he apparently continued there through its merger with Darryl F. Zanuck's Twentieth Century films. In the late forties and early fifties, he resurfaced at Metro-Goldwyn-Mayer, with his last recorded work comimg in 1953.
Dyar took many fine photos of Lombard during the first half of her Paramount tenure. Here are a few of them.