Promaster 7000m Flash Manual Update

1. Promaster 5600 Flash Manual

If you're using it in a fully manual mode (which it rather sounds like), the usual old-fashioned approach is to figure from the guide number, which should be available on the flash or in it's manual. The basic rule is that, for a properly exposed shot assuming direct flash illumination, the distance to the subject multiplied by the f stop should equal the guide number.

Promaster 5600 Flash Manual

According to another thread, this magic number (for ISO 100) is 138 for this flash, so a subject 15 feet away would require an aperture setting of 138/15 or f9.2 (at full flash power).For bounce or multiple-flash setups, there are too many variables to do more than form an initial guestimate for manual work. Digital cameras are very nice here-you can shoot a test shot, look at the histogram, and apply a correction if needed.-DrewE.