Tonal Mapped Landscape Lake Cachuma

I used Photomatix to create this "tonal mapped" landscape of Lake Cachuma. This was the first time I used Photomatix which I read about it on Flickr.

Camera settings for original photograph:
Camera: Canon EOS 20D
Exposure: 0.033 sec (1/30)
Aperture: f/20
Focal Length: 18 mm
ISO Speed: 200