"Brief glance" refers to quickly looking at something or someone for a short moment without paying much attention or deeply analyzing it. Full definition
Even brief glances at the midday Sun through unfiltered binoculars can cause permanent blindness. (newworldencyclopedia.org)
There's a serious amount of build up and character development exploring Reed Richards» (Miles Teller) sense of isolation growing up as the only super genius in town and we're given some rather briefer glances into Ben Grimm's (Jamie Bell) early home - life, Victor Von Doom's (Toby Kebbell) volatile personality, Johnny Storm's (Michael B. Jordan) rebellious streak and Susan Storm's (Kate Mara) intellect and discerning nature. (filmireland.net)
There's even a very brief glance of Hawkeye in a shot from 2012's The Avengers. (cbr.com)