On 2009-12-03, pyotr filipivich wrote:

[ ... ]

I'm with you on using the least necessary amount of "light". One
think I despise are Coleman lamps at camp sights, blazing away, and
lighting up everything. That's not the problem - it is that the light
kills my night vision a half mile away. Arggh.

Do you remember the old photographic flash bulbs? They may not
reach the same peak brightness as an electronic flash, but they burn a
lot longer, so the effect on your night vision is a lot greater (along
with the blue blobs floating where the bulb was in your field of vue
when it went off. :-)

Enjoy,
DoN.

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