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
Same camera settings with the 622
Another shot without the 622
and with the 622
So far I’m very happy with this flash.