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05-16-2010, 06:47 AM   #1
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Test results--k20d &vivitar flash durations

Here are the results from my impromptu flash tests.The fan was going at 1725 rpm and if you do the math the blade tips at 20 inches go at over 100mph. At 1/30,000 sec the blades move almost 1/16 inch (.058) with an angle of only 20' minutes.The 2nd shot which I forgot to put the text in is at 1/16th Vivitar power.I guess the bottom line for me at least is that the pop up flash on the k20d works better at action stopping at real close distance than i thought.No animals were hurt or used in this test at ZAP LABS--Prof. Charlie Zap Phd.--
A.M.&F.M.--AC/DC---summa cum hither

Last edited by charliezap; 01-21-2012 at 08:22 AM.
05-22-2010, 08:30 PM   #2
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Very interesting- thanks for sharing. I think that the last 'test' image is more than just a test image. Use it for our next 'lines' contest

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05-22-2010, 09:31 PM   #3
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Love your testing method!
05-23-2010, 06:38 AM   #4
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Original Poster
QuoteOriginally posted by JohnBee Quote
Love your testing method!
I'm glad that you like it. I'm a firm believer in the K.I.S.S. principle--Keep It Simple Stupid--charliezap


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