Konica Minolta TC-X - Manual (Page 19)

1) Attach the Konika X-20N AUTO to the hot shoe (13)
on the camera.
2) Switch from AE to manual aperture mode and set the
aperture at f/4 (ISO 100) or at f/8 (ISO 400), according
to the film speed.
3) Set the shutter speed to 1/60 sec.
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4) Set the power switch of the electronic flash at "A"
and wait until the Flash Ready Light goes on for the
flash photography.
* Ordinary electronic flash units of the hot-shoe type
may also be used with the Konica TC-X with shutter
speed set at 1/60 see or slower, and manual aperture
setting.
Correct aperture value can be calculated from the guide
number (GN) of the flash unit. Divide the GN by the
distance, in meters, from camera to subject to get
correct aperture ("f" number). For example, if the flash
unit's GN is 20, and distance from camera to subject is
5 meters, f/4 will be the correct aperture value.(20 / 5 =
4)
Exposure compensation