Originally posted by SpecialK I doubt you will be shooting sports action at the Grand Canyon, which removes what I believe was your only real limiting feature of the K100D - the tiny buffer.
But, if you will be shooting the rapids then a weather-sealed K10D may be advantageous :-)
It's hard to know what to expect at the Canyon, actually. No rapids for me, for sure. And you're right, probably not much in the way of sports, although we have been passed while hiking by JOGGERS - I kid you not!
But birds - lots of birds, birds move fast, and the ability to shoot continuous AND Raw would be nice. Not to mention the usefulness of faster auto-focus. Two years ago, a California condor came up from the canyon and soared right past my nose, not twenty feet from where I was standing on the rim. Nearly dropped my camera over the edge, I was so surprised. That won't happen to me again. Next time, I will expect the unexpected. We're also going to Rocky Mountain National Park this summer, where a camera with really good dynamic range would be just the ticket, not to mention that it's snowed on us in the Rockies in July, so that's a possibility. And next week, it's down to Port Aransas to shoot whooping cranes. My brother-in-law just came back from Port Aransas where it was quite foggy in the morning when he was out on the water. Foggy = moist. You can see where my thoughts are tending....
Will