As an amateur photographer, but an engineer who works in the automotive parts supply chain, I'm afraid to report that the supply situation in Japan is much worse than many think.
My own company (Japanese head office in a major center hundreds of km away from the affected region) has turned to working weekends to offload weekday electricity demand.
A major supplier of capacitors was hit head on by the tsunami and put global automotive production at risk up until just a few weeks ago.
Several chip suppliers are also in the affected region.
There are many companies that are sole sources of high tech materials that were wiped out. Companies that make relatively minor constituents of highly complex chemical processes are gone. Thus the larger process stops.
One of the worlds largest manufacturers of red pigments went down. Paints and inks started to become problematic. I wouldn't be surprised to hear that Toyota and Honda won't be selling cars painted red for some time.
The problems in Japan are to be measured in terms of several months, perhaps a year, before things can return to quasi-normal state.
Anyway, the other points are quite valid, I'm sure. I just think that most folks do not fully appreciate the magnitude (pardon the pun) of the issue remaining in Japan.