I assumed that the other pieces of the Google links in question contain some sort of Google related data. In fact, if you look at the first link, the string "James Nachtwey" is contained twice later in the link.
Yup. I suspect it's a difference between what is actually typed into the google image search bar, and what google suggests as a search string.
I just tested it out and if you type in "James Nac" but then use Google's auto-correcting/guessing list to do the actual search by choosing "James Nachtwey", you end up with a link that the first string is "James Nac" but it directs you to "James Nachtwey"
Interesting. Let me test this.
First, I'll type "James Nac" into the search bar, and the click the top suggested choice "james nachtwey": Link 1
Second, I'll type "James Nachtwey" into the google search: Link 2
Finally, I'll type "James Nac" into the google search, and hit enter instead of clicking any suggestion: Link 3
So what ever browser you are using is screwing up Google.
I suspect It's other browsers putting additional information in there. My links correctly resolve for me (and are much shorter strings than yours).
But I've tested it in IE 9 and Firefox 18, the two I have on my computer right now and they both work as intended and redirect to James Nachtwey.
I'm using Firefox 3.6.17.
So maybe you never actually clicked the link and just saw "James Nac" as the first string in the Google link and just assumed it was wrong and had to post the correction?
No. I clicked on the link and was puzzled that the pictures I was seeing weren't from James Nachtwey. When I clicked the original link, I arrived at the same page as the one in Link 3 above. I didn't look at the url string until after I discovered that something was wrong.