Considerations and calculations for stacking on LG format film
- Thread starter Barney
- Start date
Garry Edwards
Moderator
- Messages
- 13,548
- Name
- Garry Edwards
- Edit My Images
- No
It's a very simple process, the important thing is to totally exclude all unwanted ambient light, which means that you must work in total darkness.
There are two distinct and discreet ways of doing it . . .
1. Use multiple exposures in order to create more power than a single flash can provide - 2 flashes = 1 stop, 4 flashes = 2 stops, 8 flashes = 3 stops etc. The shutter must of course be open throughout the process. The flash will be in exactly the same place throughout. The flash will of course be set to full power.
2. Use multiple exposures in order to create the effect of more flash heads than you actually have, in which case the flash head is moved between flashes, adjusting the power between shots as necessary. Start with the flash power at the lowest required setting, and increase it if necessary in different positions. You must do it that way round because, if you turn down the power between shots, the flash head may produce more power than that set on it.
There are two distinct and discreet ways of doing it . . .
1. Use multiple exposures in order to create more power than a single flash can provide - 2 flashes = 1 stop, 4 flashes = 2 stops, 8 flashes = 3 stops etc. The shutter must of course be open throughout the process. The flash will be in exactly the same place throughout. The flash will of course be set to full power.
2. Use multiple exposures in order to create the effect of more flash heads than you actually have, in which case the flash head is moved between flashes, adjusting the power between shots as necessary. Start with the flash power at the lowest required setting, and increase it if necessary in different positions. You must do it that way round because, if you turn down the power between shots, the flash head may produce more power than that set on it.