IIRC the first Pentax I saw with a flash sync speed faster than
1/60 was the 1/100 of the ME, which introduced the vertical-run
metal shutter (made by Sanyo, I believe). The ME Super tweaked
this slightly to 1/125*. And that was as good as it got until
the PZ-1p came along in the mid 90s.
A quick look at Boz's site confirms my recollections, but also
shows that the K2 had a 1/125 sync speed. I don't know whether
this was with a cloth or a metal shutter. It also shows that
Penrax consistently offered two different capabilities; only the
top of the range offered the fastest sync speed, while the other
contemporary bodies had slightly lower performance.
[*] That tweak, from 1/100 to 1/125, is just about the same as
the relative difference between 1/180 and 1/250. It's even
closer than the numbers suggest, as there was a wide-spread
opinion that the true flash sync speed of the ME was closer
to 1/90 than 1/100.
On Fri, May 22, 2009 at 08:50:11AM -0600, William Robb wrote:
>
> ----- Original Message -----
> From: "JC OConnell"
> Subject: RE: Oh another K-7 thread...
>
>
> >I dont recall Pentax going faster than 1/60 for sync speeds
> > until the K mount bodies which were all 1975 or later.
> > I think the difference was the cloth vs metal shutters. The
> > cloth shutters were slower at full opening required for sync.
> >
> > JC O'Connell (mailto:[email protected])
> > "Honesty is the first chapter in the book of wisdom" - Thomas Jefferson
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> When they went to metal horizontal shutters, they got a nominal increase in
> sync. The LX syncs at 1/75 second. The real improvements in flash sync came
> with vertical multiblade shutters.
> Please fix you email program to stop putting in all these carriage retunrs.
>
> William Robb
>
>
>
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