LegoPacific
Guest
Isn't it far more likely that the critters will be disturbed by the auto focus assist beam? The AF beam doesn't seem to do much in the water anyhow.
Two Naive Flash Questions
- Thread starter dlwalke
- Start date
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miketsp
Contributor
Just a further comment. There is a tremendous confusion in many articles about the distances at which sharks can detect "vibrations" and whether these are mechanical or electromagnetic/electrostatic.
Often this confusion comes about because many mechanical vibrators are described as "electronic".
Example:
http://www.blueoceantackle.com/fish_magnet_info.htm
This site talks about "electronic fishing lures" whereas the operational description is very clear:
"These unique devices use specific pressure (vibrations) to emulate struggling bait fish" and
"It is now emitting a rich tone, while acoustically vibrating the water in a 360 degree pattern. You are now being heard a minimum of a 1 mile under water."
What is attracting the shark at a distance are mechanical/acoustic vibrations. It is most unlikely this device would be detectable electromagnetically at 1 mile distance.
Often this confusion comes about because many mechanical vibrators are described as "electronic".
Example:
http://www.blueoceantackle.com/fish_magnet_info.htm
This site talks about "electronic fishing lures" whereas the operational description is very clear:
"These unique devices use specific pressure (vibrations) to emulate struggling bait fish" and
"It is now emitting a rich tone, while acoustically vibrating the water in a 360 degree pattern. You are now being heard a minimum of a 1 mile under water."
What is attracting the shark at a distance are mechanical/acoustic vibrations. It is most unlikely this device would be detectable electromagnetically at 1 mile distance.
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