Roger Eichhorn wrote:
Walgreens is selliing little (about 8 cm long by 1.5 cm diameter)
clip on white light (they say) led flashlights for 2 for $5. Would a
half-dozen of these clipped to a ring around the lens work as a
serviceable ring light? No ancillary power supply would be needed.
Of course, you would have no control of the intensity except by
varying the number of lights. I have an led flash light that has
tremendous intensity and range. It's too big for this application,
but the batteries (three AAAs) have lasted for 1 1/2 years.
Another question. Could one photograph a white card illuminated by
led flashlights and get a rough idea of the spectrum by using the
computer's built in color analyzer? Photoshop will do the same thing.
Roger
Guess I'll have to go to Walgreen's.......
My 4 LED flashlight powered by 3 AA cells finally started getting less
bright so I replaced the AAs....... Been about 2 - 2 1/2 years 0n the
originals. The LEDs sure don't like power!
Bob
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