Tamrac 3330 Aero Zoom 30 Case (Black/Gray) The Aero Zoom 30 is a foam-padded zoom pack perfect for protecting a digital SLR (such as Canon's 50D or Nikon's D90) with a lens up to 4" attached. A zippered top with weather flap provides quick access and protection from the elements. Two slim side pockets store extra memory cards, batteries or a thin phone. The adjustable shoulder strap, belt loop and carrying handle provide convenient carrying options.