Weekly Landscape Thread: Sept 16th - Sept 22nd

The last two photographs are great. The first two also just that the HDR effect is somewhat more pronounced.

I have few questions about your process:
1) Is there any reason why you shoot using ISO below native 200?

2) What kind of tripod and head are you using for long exposures? Do you use remote trigger? I noticed my long exposure attempts are not as sharp as I would like probably due to inadequate camera support.