Let me show you how by using Lightroom 4, Photoshop CS6 and OnOne Software’s Perfect Suite 7 I created this image from a recent photo trip to the South West of Western Australia.
Camera: Canon 60D
Lens: Tamron 10-24mm (Shot at 10mm)
ISO: 400 @ f/8
3 Exposure Brackets (-2, 0, +2)
Misc: Variable ND Filter