On 21/10/2007, khen lim <castanet.xiosnetworks@xxxxxxxxx> wrote:
> Let's have a look at that mirror you referred to. The need to offer 1/8000
> sec max shutter speed forces the entire 'direct drive' assembly to be
> re-evaluated and that includes not just the shutter mechanism but also the
> entire mirror box. If a small mirror was first designed to support 1/4000
> sec, doesn't logic suggest that something needs to be done to beef up the
> mirror, change the mirror, toughen the mirror etc etc to help it to cope
> with a speed that is now twice as fast? I think so.
Er, no, actually, logic doesn't suggest that at all. It's only the
shutter that needs to be speeded up, the mirror will have stopped
moving by the time the shutter starts opening.
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