Selecting apertures in ttl flash – Sony HVL-MT24AM User Manual

Page 26

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HVL-MT24AM_GB 2-889-493-01 (1)

Selecting Apertures in TTL Flash

 The following tables show values when ISO 100 is used without the wide panel

or diffuser. For other ISO speeds, or if you use the wide panel or diffuser, adjust

the aperture settings according to the tables on page 28.

 The aperture ranges given in the tables are calculated values. The 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

 The 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.

 The following tables show data for certain lenses and magnification ratios. For

other lenses and magnification ratios, see page 54.