(Perdit) writes:

Looking at other images in the same set what i can see is lightly out
of focus stones. That's pretty obvious and any photo enthusiast can
see that.

The cameras are fix-focused on infinity, so close stuff is fuzzy.
Except, IIRC, the microscopic camera, which has some focusing
ability (in addition to moving the arm that carries it).

The cameras are 1024 x 1024, more-or-less state-of-the-art when
the system was designed. The two pancams shoot through different
narrow-band filters (except one can shoot through no filter and
they both can shoot through one particular (infrared?) "color").

The Martian air is dusty, but I don't know if it's enough to be
noticible, other than in the sky.

Communication is limited to a few hours a day, IIRC, as Mars rotates
and the relay satellites orbit. Some of the flow is for a bit of
engineering data and other instruments like spectrometers.