Posted by Johan St�ck on 11/07/07 08:05

Jan Panteltje skrev:

>
> I am a bit surprised modern cameras do not have 100Mb or gigabit Ethernet.
> Ethernet is galvanically isolated.
> And it has the advantage that it works almost everywhere, also remotely.

It is history of course, but I *think* it stems from the fact that
firewire is "deterministic" i.e. you are guaranteed a given capacity,
which is necessary for real-time video transfer.

Ethernet is/was not deterministic. (You get what you get, and no whining
about it....)

What we can see is that newer cameras have USB2 for transfer of captured
video.
But then, transfer of captured video does not need a guaranteed transfer
rate.

I did not know about the existance of "firewire isolators"
Would they protect from frying cameras when connected to a PC on a
un-grounded power outlet? (I mean, they have to transfer signal ground
(which could be at 110 volts ac) won't they?)

/JS

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