Flash Signals; Flash Range - Konica Minolta DYNAX40M Instruction Manual

When using aperture-priority, shutter-priority, or manual exposure
mode, the flash is set to flash cancel. To use fill flash, press the
flash-mode button to raise the flash. Continue to press the flash-
mode button to change the mode.

FLASH SIGNALS

The viewfinder flash signal indicates the status of the flash.
Signal steady - flash charged and ready to fire.
Signal blinking - flash output was sufficient for exposure.
If the flash signal does not blink after taking the picture, the subject
was not within the flash range.

FLASH RANGE

The range of the built-in flash depends on the speed of the film and
the aperture used for the exposure. The flash range cannot exceed
4.0m/13.1ft. The subject must be within the flash range specified in
the table below to be correctly exposed.
Aperture
f/2.8 1.0 ~ 4.0m / 3.3 ~ 13.1 ft.
f/3.5 1.0 ~ 3.4m / 3.3 ~ 11.2 ft.
f/4.0 1.0 ~ 3.0m / 3.3 ~ 9.8 ft.
f/5.6 1.0 ~ 2.1m / 3.3 ~ 6.9 ft.
Camera Notes
Do not use the built-in or accessory flash when using a filter with a filter
factor greater than 0, a close-up lens, or the focus-range limiter or macro
release on certain lenses. This will result in an incorrect exposure.
ISO 100 ISO400
1.0 ~ 4.0m / 3.3 ~ 13.1 ft.
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