F-Stop Pack Drab Crinkle. Whether you shoot photos for a living or just live to shoot photos, the Burton F-Stop Pack [28L] is ready to take your game to the level after next level. Like a portable studio, it has padded pockets, stashes, and attachments for all your photo gear. Tapping into the minds of pro snowboard photographers like Dean Blotto Gray and Adam Moran, its intuitive design is unmatched in todayâ??s sea of photo packs.