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Re: [OM] flash sync

Subject: Re: [OM] flash sync
From: "Dirk Wright" <wright@xxxxxxxxxxxx>
Date: Mon, 24 Jan 2000 08:44:21 EST
>  A significant one, if the birds were in fairly strong light. While
>you'd have to have been synching at 1/60th, they could have been 
>at 1/250th, thus buying further reach from the flash, and in the case 
of 
>some birds hovering or in any kind of motion, more image sharpness. 
> It's one of the major shortcomings of the OM line.
>  If you look at the NIkon & Canon line-up, you'll see that there 
>are inexpensive amateur cameras with much pro potential. The way
>the manufacturers draw lines of demarcation for marketing to pros 
>is via the synch speed. Most amateur cameras go to 1/125th. Most pro
>units jump to 1/250th. Of course, max fill-flash range isn't of 
>importance to everybody.
>
>                                        *= Doris Fang =*


There are a couple of cameras that appear to use the Olympus Super FP 
technology. One is the Sigma SA-5:

"External flash synchronization: Hot shoe (with X contacts and special 
strobe "dedication" contacts) During EF430 Super FP flash mode, 
synchronization at all shutter speeds up to 1/4000 second is possible. 
"

and the Nikon N90s and dedicated Nikon Speedlight:

"FP High-Speed Sync  
Enables flash sync with high shutter 
speeds from 1/250 to 1/4000 sec., with 
manual exposure control. You can 
make fill-flash pictures even with ISO 
film that has a high rating, and still 
maintain wider aperture settings for 
expanded control of depth of field."

Either the Olympus patent ran out, or they are licensing the technology 
to these companies.

Be seeing you.


Dirk Wright

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