<a href="http://www.flickr.com/photos/hortonhea...

Here is the right SSI animation of the sol 0 to 38 changes of the footpad with an image link to a 2x 3D of the "bright spot" changes...

I used NASA TIF versions of the sol 0 images and balanced the shadow details in the sol 38 JPG images to within a few percent of the sol 0 image.

Why the (* insert bad word *) were'nt the sol 38 images taken at exactly the same time and orientation?...

Er, maybe the camera pointing was the same -- relative to the lander! Although this leg, which is resting on soil, didn't settle -- but maybe the others are on exposed, sublimating ice and did!!

Ah well, maybe there be "offical" comment -- someday in a galaxy far, far away on these minor Mars mysteries.