Sony HVL-MT24AM User Manual

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

Basics

Selecting the aperture when using other than ISO 100, or

when using the wide panel or diffuser

1 Check the calculated acceptable aperture range under the same

condition with ISO 100 by using the table on page 27.

2 Check the additional adjustment when using other than ISO 100 or

when using the wide panel or diffuser by using the table on page 28.

3 Check the calculated acceptable aperture range by using the f/stop scale

using the results of step1 and step2.

4 Apply the result of step3 to the actual aperture range for this particular

lens and select the usable range for satisfactorily results.

Example: Using a 50mm F2.8 Macro lens, two twin flash units, no arm,

magnification ratio of 1:2, and ISO 200

1 Check the calculated acceptable aperture range when using a 50mm F2.8 Macro

lens, two twin flash units, no arm, magnification ratio of 1:2, and ISO 100.

f/8 - f/180 (refer to the table on page 27)

2 Check the additional adjustment when using ISO 200 and diffuser by using the

table on page 28.

Increase the aperture by +1.5 stops (refer to the table on page 28).

3 The aperture increased by +1.5 stops from f/8 is equal to f/4.5, and the aperture

increased by +1.5 stops from f/180 is equal to f/108.

4 The actual aperture range for a 50mm F2.8 Macro lens is f/2.8 - f/32, so the

upper limit of the adjusted f/4.5 - f/108 range, i.e. f/108, is beyond the range that

can be set. The usable range for satisfactorily results is therefore f/4.5 - f/32.