Below should be an embedded video of the 'how to' I made showing how to modify/hack the Vivitar 283 flash to make it an adjustable variable output flash. I made two versions, a 3 minute and an 18 minute version. Each shows the steps, one is quicker than the other. If you are tech-savy and handy in the slightest you will probably be just fine watching the 3 minute video. Feel free to watch both, they have the video clips (with much editing) but I voiced each one differently.
Here are the links, just in case:
Vivitar 283 adjustable flash hack - 18 min
Vivitar 283 adjustable flash hack - 3 min
Thanks for stopping by,
My videos on YouTube
My videos on Vimeo