The video in question is this one.
0:50-2:10 : in the picture at 0:54 (the picture that was analyzed) it's only the boot that was lit., if there was another light source, the entire area would be lit. However, we can see many surrounding dark parts. Also:
2:20-3:00 : It is totally possible for one side of someone to be in light, and one side to be in darkness. if you hold a flashlight to something opaque, the side towards the flashlight is in light, and the other side is in darkness.
conclusion: the "extra light" was not there. Also: at 4:20 the rocks would have 2 shadows, and so would the US flag.
6:00-7:30, earth light, uneven ground, camera lens all have an effect on uneven lighting.
7:30-9:00 Also, remember the moon ground is uneven, so the horizon at eye level while the cameras are strapped to the chest is totally possible. The video does not show us where they got the "few inches" from, no math, nothing.
Also: keep in mind:
the moon can reflect light
the moon is uneven
the moon has no atmosphere
the moon can also be a light source if it reflects the light.
see
http://en.wikipedia.org/wiki/Moon_landing_conspiracy_theories for more details
if this thread should be moved, please move it/tell me.