Still don't get the HDR concept. My monitor can show #000000 and #ffffff and everything inbetween. Well, probably not everything, but a lot, anyway. Thinking of the night picture, where dark goes #000000 and light goes #ffffff. If human eye can see more details in the dark, is it so that human eye can see more bits, like 36 bit. Where the camera registers only #000000, human eye would see everything between #000 000 000 and #008 008 008. Or does the human eye kind of adjust curves, where everything between say #000000 and #010101 extends to a range between #000000 and #040404, while same happens in the bright end. While the middle range kind of loses dynamic range, because it is not interesting for the brain.

Light ranges from no light at all to really a lot of light. So much in fact that if
you looked at it, it would blind you in a fraction of a second. Normal every day light goes up to what you can see on a bright sunny winter day when there's a lot of snow around. Let's say no light is represented with 0 and the brightest daylight is represented with 100. The human eye can sense a large portion of this range and can easily adapt to changes in light intensity. A camera sensor however can only discern a small part of the entire range, let's say around 20 in our example. It can sense light from 30 to 50 on our imaginary scale, but not below or above. Change the lens settings and it will sense light in the range 70 to 90. And so on. You can move this range up and down between 0 and 100, but you can't extend it no matter how hard you try.

In HDR you take several photos, each exposed for one fraction of the entire light range and then smoothly blend them together. When you take a photo so that the camera will record light in the range 0-20, everything above 20 will be pure white. When you take a photo with settings that will take light in the range 80-100, everything below 80 will be pure black. Take 5 photos to cover the entire range of light, discard sections of pure white and black from each photo and then mix them together and that's it.

In the simplest scenario you are taking a photo of a landsape. The hills are relatively dark while the sky is relatively bright. Expose for the hills and the sky will be overexposed (too bright). Expose for the sky and the hills will be almost black. In HDR you take two such photos, one exposed for the dark parts of the scene, the other for the bright parts. Then you take the hills from one photo and the sky from the other and glue them together.

Kirrs look very good and natural; I can't tell they're HDR at all (which is I think the best way to do it, at least for well-lit shots).