Tonna and Terry lovely pictures! I stumbled upon your site while I was looking into lenses to get for my Pentax k-x. I will be traveling throughout Southern Africa later this month on safari and I just purchased the 50-300mm after viewing your pictures and am so impressed! I can't wait for my trip!
Interesting side notes, I am a travel agent myself and lived in Thailand a few years so have many similar pictures :) Great site!!