HVL-MT24AM_GB 2-889-493-01 (1)
26
Selecting Apertures in TTL Flash
e following tables show values when ISO 100 is used without the wide panel
or diuser. For other ISO speeds, or if you use the wide panel or diuser, adjust
the aperture settings according to the tables on page 28.
e aperture ranges given in the tables are calculated values. e actual lens will
have its own usable aperture range.
Example: Using a 50mm F2.8 Macro lens when ISO 100, with a pair of
twin flash units with no arm, at a magnification ratio of 1:1
e range of acceptable apertures is calculated to be from f/4 to
f/90 (refer to the following table).
However, the lens aperture range is f/2.8 to f/32, so the actual
range possible with this lens is f/4 to f/32.
e following tables show data for certain lenses and magnication ratios. For
other lenses and magnication ratios, see page 54.
