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- Newsgroups: rec.photo
- Path: sparky!uunet!munnari.oz.au!uniwa!cujo!cc.curtin.edu.au!zrepachol
- From: zrepachol@cc.curtin.edu.au
- Subject: Re: Canon 10s Vs Nikon N90, Which one?
- Message-ID: <1992Dec28.224108.1@cc.curtin.edu.au>
- Lines: 25
- Sender: news@cujo.curtin.edu.au (News Manager)
- Organization: Curtin University of Technology
- References: <1992Dec18.031906.10270@cbnewsh.cb.att.com> < <1992Dec21.233050.15308@jarvis.csri.toronto.edu> <>> < <1992Dec22.190513.10742@research.nj.nec.com> <>> < <1992Dec23.090900.19842@jarvis.csri.toronto.edu> <>> <BEN_WEN.92Dec23164250@w20-575-50.mit.edu> < <1992Dec28.031152.9205@jarvis.csri.toronto.edu> <BzypJF.2Js@jrd.dec.com>
- Date: Mon, 28 Dec 1992 13:41:08 GMT
-
- In article <BzypJF.2Js@jrd.dec.com>, diamond@jit533.jit.dec.com (Norman Diamond) writes:
- > In article <1992Dec28.031152.9205@jarvis.csri.toronto.edu> acs@csri.toronto.edu (Alvin Chia-Hua Shih) writes:
- >>In <BzyIHq.KoC@jrd.dec.com> diamond@jit533.jit.dec.com (Norman Diamond) writes:
- >>>In article <1992Dec25.032603.25071@jarvis.csri.toronto.edu> acs@csri.toronto.edu (Alvin Chia-Hua Shih) writes:
- >>>>In <BzszB1.ICv@jrd.dec.com> diamond@jit533.jit.dec.com (Norman Diamond) writes:
- >>>>>In article <1992Dec24.205338.11007@jarvis.csri.toronto.edu> acs@csri.toronto.edu (Alvin Chia-Hua Shih) writes:
- ...
- >>The SB-25 accomplishes FP-sync (I believe), by simply keeping the flash
- >>tube illuminated for the full duration of the shutter being open.
- >
-
- I would expect that the flash runs ~100k slashes per sec in FP mode, just like
- a Xenon Arc light.
-
- >>The trick is to change the brightness of the flash, rather than the duration.
- >
-
- No, you fiddle the duration of each flash. Trying to control the flash current
- any other way would result in *HUGE* power dissapation in the control circuit.
-
- Maybe some kind sole with access to an SB-25 and a high speed photocell and
- CRO could have a look for us.
-
- ~Paul
-
-