Manual flash (m) – Sony HVL-MT24AM User Manual
HVL-MT24AM_GB 2-889-493-01 (1)
Manual flash (M)
Normal TTL flash metering automatically adjusts the flash intensity to provide
the proper exposure for the subject. Manual flash provides a fixed flash intensity
irrespective of the brightness of the subject and the camera setting.
In manual flash mode, the maximum flash power is when the manual flash
control is set to 1/1. Each step of the flash power level corresponds to one
aperture stop. Changing the setting by one stop, for example from 1/1 to 1/2, is
equivalent to decreasing the aperture one stop, for example from f/4 to f/5.6.
Manual flash can only be used when the camera is in the M mode. In other
modes, TTL measuring is automatically selected.
As manual flash is not affected by the reflectivity of the subject, it is convenient
for use with subjects with extremely high or low reflectivity.
TTL flash metering
Manual flash metering
Select M mode on the camera.
Press the TTL/M/Test button to light on the M (manual-
flash control) lamp.
The modes change in the following order. (Test flash (p. 40), Modeling flash