"If you use OM4Ti in auto mode and flash set at Super FP, you will only get
proper flash control at shutter speed over 1/60s."
There is no "proper control" of the Super FP mode. The flash's output is
uncontrolled -- multiple bursts that look like continuous output. The output is
constant, regardless of film speed, aperture, shutter speed, ambient light
level, or distance from the subject -- just as if you were using a manual
flash.
"It is not the shutter speed [that] affects your flash working distance, it is
the ambient light intensity. If ambient light intensity is fixed, the shutter
speed and aperture is a constant value. e.g. you can only get higher shutter
speed by open up the aperture and in this case larger aperture passes more
light to film."
But it won't have any effect in Super FP mode, because the flash's output is
"continuous." You can't get more flash light to the film by opening the
aperture, because the shutter speed will shorten in the opposite proportion.
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