Macro the 1/f rule and flash duration

Started Sep 8, 2008 | Discussions thread
jpr2 Forum Pro • Posts: 15,554
re: all is clear now

JimH wrote:

This is one of the shots I'm looking at:

Note that there are two complete cycles in 50 microseconds. That
works out to 25 microseconds per cycle, which is 40 KHz.

there are two grids actually, and as I was looking at a central part
of these pics. only, I must have overlooked that it is not the smaller
one, but rather the larger, which corresponds to the scale marked
in the top-right corner, a small but crucial glitch, thanks for clarification,

jpr2
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http://www.flickriver.com/photos/qmusaget/sets/72157600341377106/

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