SunPak 622
I’m continually on the search for a better light source. For cave photography it’s hard to beat flash bulbs- large amount of light and slow burn time really works well for large areas and the output/weight ratio is good for packing in your cave pack. Since nobody manufactures the regular flash bulb anymore though we’re dealing with a finite supply. I’ve experimented with several small flash units and even adapted small 110v studio slaves to battery for portable use.
With some pretty good results.
But still hadn’t found a great portable light. I picked up a used Sunpak 622 and I think I’ve found the light! 
Here’s a shot taken with a couple of regular flashes
regular flashes
Same camera settings with the 622
with sunpak 622
Another shot without the 622
without sunpak
and with the 622
with sunpak 622
So far I’m very happy with this flash.
July 3, 2009 at 6:22 am
[...] I thought I’d write about my latest photography tool- Cactus V4 radio triggers. I recently purchased several recievers and a couple of transmiters from MPEX. The transmiter fits on the hotshoe of my canon slr or G9 cameras, the recievers are attached to my flash units either to the hot shoe of my vivitar flashes or via pc cable connection to my sunpak 622. [...]