User's Manual

Detailed User Guide 29
© 2014 P romote Systems
(such as Cokin series), mount your ND filter holder now.
7. If your pre-flight checklist took more than a few minutes, make sure that "Begin Ramp" and "End"
delays are still valid.
8. Press "Start" on Promote Control. Depending on your settings, one or more prompts may be shown,
clarifying the next step. Otherwise, the image sequence will begin immediately.
Depending on your camera model, you may be able to preview the images as they are taken on your
camera rear LCD. Note that current Nikon cameras currently will not be able to provide image previews if
Advanced Bulb Ramping is used.
If a particular set of settings eventually fills your camera buffer, it means the images are being taken too
fast, and your camera cannot write them to the memory card quickly enough. In that circumstance, use
Promote Control Setup setting called "Bulb ramp / bulb HDR image buffer time". Promote Control uses
this setting to safeguard bulb HDR and bulb ramping exposure sequences from overfilling the buffer. Its
default value of 1800ms is adequate for most cameras. You may try increasing that setting if you
experience symptoms described above.
Using Live Modifications
The Live Modifications (or Live Mod) feature is useful when you realize that the ramping settings were
not correct. You do not want to stop the ramping sequence to readjust your settings - this will result in
an abrupt exposure change that we are trying to avoid.
Instead, use the Live Modification, or Live Mod feature. It is only available when the bulb ramping
sequence is active, and offers a way to gradually shift the complete ramping curve up or down as
necessary. When you apply a Live Modification, the whole set of exposures is shifted, including constant
zones. If you were to apply a Live Mod in the very beginning of your sequence, it would slowly go from
"Original" curve below to the "Modified" curve: