The gray/green Kinray 53PR Backpack from Vanguard boasts a host of features that make it a winner in the area of dual function packs for photographers, videographers or even birders. This pack can hold a bevy of equipment ranging from 1-2 DSLRs (with lens attached), 4-6 extra lenses (up to 300mm f/2.8), flash, tripod and various accessories. It is also rated to accommodate most straight or angled spotting scopes up to 82mm of objective diameter. In addition, it is equipped to handle serious field work for day or overnight excursions since it contains bottom straps for a sleeping bag. Your tripod is held by supplied straps that secure it to the back.