On Wed, 15 Dec 1999, Dirk Wright wrote:
> N*k*n used the brute
> force method and put really expensive shutters in thier cameras to get
> high sync speeds. Olympus went the other way and addressed the flash
> end of the problem.
Perhaps some of the more technically knowledgeable folks could correct
me if this is wrong, but the only way I can see that full synchro flash
could work with a focal plane shutter is by making the flash duration
very much longer than is usual for an electronic flash - about 1/30s in
fact, since *both* shutter curtains must move across whilst the flash is
producing light (and that's how long it takes for 1/60s exposure).
Since the traditional xenon flash lasts for about 1/10,000s, I think
Dirk has a bit of cheek calling Nikon's approach brute force ;)
Is there some system that changes the flash mode automatically at
exposure times of 1/60s or longer? I guess there must be, otherwise
flash durations would have to be stupidly long. So long you'd have to
call it a floodlight, not a flashgun.
> It would also be great to see Super FP in an olympus point 'n shoot.
I've a nasty feeling you'd drain a point & shoot's batteries v. quickly.
For that application, I think it would be better to just use a leaf
shutter and more traditional flash technology.
--
________________________________________________________________________
* | |
| / | |/-\ | Ian A. Nichols |
| | | | | | |
| \-/| | / | i.a.nichols@xxxxxxxxxx |
| * iann@xxxxxxxxxxxxx |
------------------------------------------------------------------------
< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
|