HDR or High Dynamic Range is something our eyes naturally have, but cameras don't. This shot is actually a combination of 7 different exposures from dark to light. I then merged them in Photoshop.
The great thing about HDR is that you don't need a special camera or shoot in a special format (raw). All you need to do is take a series of photos at different exposure values. The way you do this is by ONLY changing the shutter speed for each frame. Take one shot underexposed, one normally exposed, and one overexposed. Of course, you'll need a program like Photoshop to combine all three shots if your camera doesn't do this for you.
Trillium Lake, Mt HoodCanon 6D, 1/45s, f/22, ISO 100, 17mm