wow i've been there once. amazing place. we camped for 5 days and had only two days of clear weather. we lucked out. as is commonplace down there, the weather can turn to crap at the flip of a hat. you've really got to count your lucky stars when you get a clear day :]
i love how serene the trees and water look. then when you glance up at the mountains and sky, the feel of the photo completely changes. the mountains are almost intimidating...if that makes any sense. but absolutely beautiful. i can't stop looking at it.
That trees are "ñire" species Michael, Lengas are very similar but a lot taller than Ñires. I needed to find something wrong in your description because the photo is just perfect. Regards from Argentina.
Thanks for the comment and very good question. In a perfect world, a few last rays of the setting sun illuminating the leaves would have given them extra pop, but the geography of the area blocks the late afternoon light from this spot, so it wasn't actually an option. I thought about fill flashing the foerground tree, but decided it wouldn't look right.
IMO, the best autumn mountain shots are taken on a ridge looking 90 degrees from the sun with a polarizer with colorful leaves lit by the glow of the unobstructed horizon about a minute after sunset. Then the light isn't harsh, but there is a nice glow in the leaves that is accented by the polarizer.
I figure it might not have been an option. I agree with you about the fill flash. If the scene didn't make it so obvious that there couldn't have been lighting on the leaves, then maybe the flash would've been ok..