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Author Topic: Useful iPhone app for measuring vibration  (Read 2211 times)

gerald.d

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Useful iPhone app for measuring vibration
« on: August 17, 2013, 02:11:34 AM »

Hi all -

Downloaded it, and will try it out later.

https://itunes.apple.com/us/app/iseismometer/id304190739?mt=8

Not a properly conducted scientific comparison, but thought it was interesting...

Phase One AF, 1/60th of a second, MLU; ALPA FPS, 1/60th of a second:

 

X axis in direction of shooting
Y axis perpendicular to that
Z axis is vertical

HR32 leaf shutter at 1/60th (mounted on FPS)



And finally, 1 second exposure AF with MLU, FPS



(those screenshots also serve as a useful indication as to how utterly crap the battery is in the iPhone 5!)
« Last Edit: August 17, 2013, 03:03:50 AM by gerald.d »
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EricWHiss

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Re: Useful iPhone app for measuring vibration
« Reply #1 on: August 17, 2013, 05:11:53 AM »

This is interesting, thank you for sharing. How did you connect the phone to the camera/lens for the tests?
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gerald.d

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Re: Useful iPhone app for measuring vibration
« Reply #2 on: August 17, 2013, 05:16:17 AM »

This is interesting, thank you for sharing. How did you connect the phone to the camera/lens for the tests?

AF - balanced it on the top of the camera.
FPS - balanced it on the top of the digital back.

(like I said - perhaps not very scientific!)
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free1000

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Re: Useful iPhone app for measuring vibration
« Reply #3 on: August 20, 2013, 03:29:31 AM »

Like
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Conner999

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Re: Useful iPhone app for measuring vibration
« Reply #4 on: August 20, 2013, 07:18:05 AM »

Use the app myself for giggles. Remarkably sensitive. Alarm function can be fun.
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