Stone13 Goldmember  1,690 posts Likes: 8 Joined Aug 2009 Location: Huntersville, NC More info | May 12, 2010 20:31 | #1 I've noticed noise coming from my 430 flash, sounds almost mechanical or maybe like whining but I don't think there's anything mechanical in there, that's about the only way I can describe it. I hear it while the AF beam is firing or during the preflash, not sure which. Am I paranoid? Ken
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TeeWhy "Monkey's uncle"  10,596 posts Likes: 5 Joined Feb 2006 Location: Pasadena, CA More info | May 12, 2010 20:44 | #2 Is it the zoom head adjusting for changes in focal length? Gallery: http://tomyi.smugmug.com/
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Stone13 THREAD STARTER Goldmember 1,690 posts Likes: 8 Joined Aug 2009 Location: Huntersville, NC More info | May 12, 2010 21:24 | #3 Tee Why wrote in post #10170827  Is it the zoom head adjusting for changes in focal length? Nah, I was testing out my new 15-85 USM, you cannot hear it zoom (i'm still amazed by that) maybe this has been going on since i've had the flash since the zoom on my other lenses is so noisy compared to this one... Ken
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JoeRavenstein Goldmember 2,338 posts Likes: 1 Joined Mar 2010 Location: E Tx More info | May 12, 2010 21:28 | #4 There is a mechanical sound when the flash adjusts for focal length of the lens being used as you zoom the lens. I suspect this is what you are hearing Canon 60D,18-55mm,55-250mm,50mm compact macro, AF ext tubes. Sigma 8-16mm uwa, 18-250mm, 85mm F1.4, 150-500mm
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Stone13 THREAD STARTER Goldmember 1,690 posts Likes: 8 Joined Aug 2009 Location: Huntersville, NC More info | May 12, 2010 21:33 | #5 Joe Ravenstein wrote in post #10171063 There is a mechanical sound when the flash adjusts for focal length of the lens being used as you zoom the lens. I suspect this is what you are hearing Thanks Joe, maybe this is what i'm hearing. Scared the crap outta me because i've never heard it before. I though the flash was going on me already, excuse my noobness Ken
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tfd888 Goldmember  1,816 posts Likes: 3 Joined Apr 2009 Location: CA, USA More info | If you alter your focal length without activating the meter or AF, the flash head doesn't zoom till metering or AF is started. Once started and while it's running, the flash head will zoom in and out with your lens. Note that the flash will only auto zoom like this when the flash head is in the forward facing position and is set to auto zoom. You can also manually zoom your flash. Alexander R.O.
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klr.b Goldmember 2,509 posts Joined Jun 2009 Location: SoCal More info | May 12, 2010 21:42 | #7 Stone 13 wrote in post #10171045 Nah, I was testing out my new 15-85 USM, you cannot hear it zoom (i'm still amazed by that) maybe this has been going on since i've had the flash since the zoom on my other lenses is so noisy compared to this one... you probably mean "you can't hear it focus," because the focus motor on some lenses are noisy. you shouldn't really hear a lens zoom. gordon
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Stone13 THREAD STARTER Goldmember 1,690 posts Likes: 8 Joined Aug 2009 Location: Huntersville, NC More info | May 12, 2010 22:26 | #8 Thanks guys, I was able to reproduce the noise after reading your posts, I never even though about the flash head zooming to match fl but it makes perfect sense. Gotta love POTN.... Ken
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