Thanks for the hints. Does the tolerance on the resistors affect the
shutter speed much. In any case, can such an inaccuracy in the shutter
speed be compensated for at the labs for example?
thanks
Konrad
Frank van Lindert wrote:
>
> On Mon, 02 Feb 1998 10:19:18 -0500, John Hermanson <omtech@xxxxxxxxx>
> wrote:
>
> >Reversing the back panel on any T flash simply puts the flash into full
> >manual mode (which is then control OTF by the camera).
> >The manual adapter resistance start at 7.6K for 1/1000, 15.2K for 1/500,
> >30.9 1/250th an so on. Double resistance for each ss down the scale.
> >
> >John
> >
> Small addition:
>
> If you can live with shutter times up to 1/8s, a 1 megohm logarithmic
> potentiometer will do fine. Alternatively you could take a 10
> Meg-log-potmeter, but then the shortest exposure times will be very
> difficult to set. In each case put a 7.6K resistor for the starting
> value in series with the potmeter!!
> If you want all times... yes, then you will need discrete value
> resistance and a good 12 position rotary switch (or, now I come to
> think of it, one 100k and one 10M pot in series might do well...)
>
> Frank van Lindert
> Utrecht - Neth.
>
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