The ElysiaVisuals RamperPro gives you unrivaled ramping shoots by using a light sensor and by analyzing the histograms of your images. You are not limited to bulb mode only or to linear ramping. This way the RamperPro can automatically deliver perfect timelapse sequences. Just set it and forget it.
SecondShooter RamperPro setup tutorial from ElysiaVisuals on Vimeo.
Very rough and quick how to setup guide for using the Second Shooter controller with the RamperPro
For more: ElysiaVisuals.