I read this and decided to look at the photo that appears to be "spot lit"
and found that indeed the area behind didn't appear to be evenly lit. I am a
professional photographer and I know this, to appear evenly lit the area
behind him had to be of equal reflectance..... take a look at
http://www.hq.nasa.gov/office/pao/Hi...1/20130774.jpg you can see
the surface varies greatly. Same as the background of a model on a white
sand beach would appear spotlighted if the area beyond the beach, in the
frame and out of focus was volcanic.

Sorry to point this out, there are many here that are much more qualified
than me to point out flaws in this, but I do know a few things about
photography and this was blatantly obvious once I looked at some other pix
showing the area around the lander.
David Fields
www.delawarestudio.com