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Canon Image Challenge | all galleries >> Challenges From The Past >> 2013 Challenges >> cic 107 Shallow Depth Of Field >> Eligible > Success
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25-NOV-2013 Paul AKA Sparkey2

Success

Had to use a 25 watt bulb rather than the 60 watts as stated in the RFP but due to the low DC resistance level of a 60 watt bulb it was attempting to light the bulb many times greater than 60 watts. Look at the voltage drop fully loaded.

Canon EOS 50D ,Canon EF 70-200mm f/4L USM
70 mm F5.6 1/30 ISO 100 hide exif
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Date/Time25-Nov-2013 22:29:09
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Canon Image Challenge27-Nov-2013 01:47
That was fun playing around with it, if the batteries would have had enough power (capacity) then the 60 watt bulb on DC power would have tried to light up to around 800 watts. Those batteries did not have that kind of power and the internal resistance would not allow it. If your a pro, then Fluke is the only way to go! Rugged, tough, accurate. The Ideal in the background.... not so much. Paul
Canon Image Challenge26-Nov-2013 23:46
Very interesting Paul! Glad you did the experiment! BTW that fluke meter in the front is the one my fiance uses!

Sierra
Canon Image Challenge26-Nov-2013 13:45
A triple win. Not only do we get a very good photo, we get to take part in a neat science experiment, and we learn something to top it all off.

Jim
Traveller26-Nov-2013 10:30
Very cool! You are a man of your word. Best Wishes, Traveller
Canon Image Challenge26-Nov-2013 05:09
As a sidebar note the $400.00 meter in the foreground has virtually the same reading of my cheap $39.00 (gift) meter in the background. Had it been a A/C circuit filled with complex harmonic distortions on the sinewave then Mr. $39.00 would not have fairer so well. Paul