Think Tank digital holster 30 V2.0. The Digital Holster 30 V2.0 is designed for regular size DSLRs such as the Canon 5D Mark III, 7D, 6D, and 60D or Nikon D800 (snug fit), D600. D300s, and D7000 This is the only top loading bag for a DSLR that can carry a 70-200 f2.8 with the lens hood either reversed or in position, ready to shoot. An industry first! The 30 V2.0 features the "Pop Down" section which increases the bags height for keeping the lens hood in shooting position or carrying a longer lens. It comes with side attachment rail for connecting a small Modular, Skin or Multimedia component to holster and makes it attachable to all Think Tank belts and bags with modular rails. The 30 V2.0 is compatible with, the Pop Down retracted 24-70mm f2.8 with hood Extended (Canon or Nikon); 70-200 mm f2.8 with hood Reversed (Canon or Nikon); 300mm f4 with the hood Reversed (Canon or Nikon) . It is compatible with, Pop Down extended, 70-200mm f2.8 with hood Extended (Canon or Nikon); 300mm f4 with the hood Extended (Canon or Nikon).