black dot on my footage - HC7 at DVinfo.net

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Sony HVR-A1 and HDR-HC Series
Sony's latest single-CMOS additions to their HDV camcorder line.


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Old April 9th, 2007, 09:51 PM   #1
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black dot on my footage - HC7

Just bought a HC7 and notice a huge black dot appearing on my video footages it is only viewable at higher aperture around f8 and above...
looks like a dirt falls on the cmos but how is it possible?
Yow Siang is offline   Reply With Quote
Old April 10th, 2007, 07:26 AM   #2
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Quote:
Originally Posted by Yow Siang View Post
Just bought a HC7 and notice a huge black dot appearing on my video footages it is only viewable at higher aperture around f8 and above...
looks like a dirt falls on the cmos but how is it possible?
I don't think it's on the CMOS itself, otherwise you would always see it, no matter the aperture. It's probably a speck or flaw on one of the lenses nearest to the aperture. I suggest exchanging it to get another camera or to get it serviced under warranty.
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Old April 16th, 2007, 08:19 PM   #3
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Black Scanning bars on shutter speed above 300

My HC7 is now "Hospitalised" in the "Sony Hospital" Found another problem too.. that is in indoor lighting when i try to increase shutter speed to 300 i see black scanning lines on the lcd screen.. but it looks fine is outdoor lighting.. any idea why?
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Originally Posted by Jeff DeMaagd View Post
I don't think it's on the CMOS itself, otherwise you would always see it, no matter the aperture. It's probably a speck or flaw on one of the lenses nearest to the aperture. I suggest exchanging it to get another camera or to get it serviced under warranty.
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Old April 17th, 2007, 12:14 AM   #4
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I'm going to venture a guess you were dealing with "indoor" lighting that cycled at the same speed as the shutter (like 50/60hz "noise") - perhaps flourescents?

Did the problem show on tape and/or the viewfinder - I've noticed some horizontal "noise" on my LCDs - perhaps it's interference with how the LCD refreshes?

Just a couple WAG's, but I'm a tech in another life, so I've seen some strange things and am pretty decent at diagnostics...

DB>)
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