Operating Instructions

155

Selecting the sync moment

Flash photographs are illuminated by two light

sources, the available light and the light from the

flash. Parts of the subject that are exclusively or

primarily illuminated by the flash are almost

always reproduced extremely sharply (with cor-

rect focusing) due to the extremely fast pulse of

light. By contrast, all other parts of the subject –

those that are sufficiently illuminated by the

available light or illuminate themselves – are por-

trayed with different degrees of sharpness in the

same picture.

Whether these parts of the subject are repro-

duced sharply or "blurred”, and the degree of

blurring, is determined by two independent fac-

tors.

1. The length of the exposure time, i.e. for how

long these parts of the subject "act upon” the

film

2. How quickly these parts of the subject – or the

camera itself – are moving during exposure.

Flash on the first shutter curtain Flash on the second shutter curtain