Can you place the dish on top of a dark or black cloth so that
the whitish object would stand out? It might help a bit if you
illuminate the black cloth from underneath it...like illuminate
(Bottom) -> black cloth -> whitish object -> your
camera (Top)
Not sure if your camera got super macro mode or not?
If it has...you can take the picture of the whitish object on
super macro mode in full resolution then use any image editing
software to stretch the picture size by 200%?
I'm not expert in photography, but I'll try it if I were
you. 
Thanks, I tried that as well. I tried so many things I am
getting really fed up. That is why I am asking for expert advice.
People that knows EXACTLY what to do. Try this, try that, believe
me, I have been trying for a really long time.
What I have not been doing is reading up articles gleaned from
the internet. I think this way might be faster, if someone that
knows offers his advice out of the goodness of his heart.
I don't know how many articles I have to read before I find out
what to do.
Sure if I spend money on a camera that has micro mode and manual
zoom lens, that might work but before I take that step, I want to
explore all possibilities.
OK maybe a more specific question that I could not find from the
DSC-120W manuals. How to get the lens provided to be fully manual
instead of automatic or semi automatic and how do I manually adjust
the focus?
If I manually. if I can manually adjust the focus, how do I tell
if I have the right focus, the very small viewfinder, the one you
look through with your eyes, seems woefully inadequate.
Thanks in advance