Wow, the sunshine is gorgeous. Oh! You can see the blue really well in the water this time; I didn't notice it being so obvious last time. God, this waterfall's beautiful. How it flows is just lovely.
Sorry, I can't really comment on the technical skill it takes to take a shot like this. I only took one semester of photography in high school, but I do own a $200 SLR camera (bought with my own money, when I had a job). What settings did you use for this shot? Did you use different settings for the other ones? Did you even use an SLR?
Yep, a digital SLR. It's a Canon 300D. In this picture, paired with a 17-40L piece of Canon L glass (wide angle zoom), nearly at full wide angle - 21mm. F22 for 1/5 second (so a small aperture, longer exposure to get water blur). There is a circular polariser fitted. On a tripod with a remote release to avoid camera shake.
Shot in raw and then finished in adobe lightroom as follows :
Cropped to pick up focal points in a more pleasing way.
White balance as shot in camera.
Auto-toning of image.
Exposure reduced slightly to avoid blow out of highlights.
Medium boosts to clarity and vibrance (that's what brings out the water colours)
A little fill light to bring out shadows lost by reducing exposure
Some dust-spot corrections to remove one small annoying branch in view
Finally a preset landscape-sharpening before closing the image.
I know that sounds complicated, in reality it's a couple of minutes of clicking on some standard lightroom stuff for working with raw images.