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June 6th, 2010, 04:15 AM
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#1 |
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Regular Crew
Join Date: Aug 2006
Location: Brussels, Belgium
Posts: 162
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vertical light streaking
I've just noticed some vertical streaking in low-light images with one of my XH-A1 cams. A bright light source in the frame causes a bright line from top to bottom. It's not a lens issue, it looks like an electronics problem.
I hadn't noticed it before, so I'm wondering if there is something wrong. Is this a service issue, or does this just happen? The camera is from Dec 2007. I was shooting HDV 25fps, with the gain up to 12dB. |
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June 6th, 2010, 06:52 AM
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#2 |
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Regular Crew
Join Date: Jan 2009
Location: Round Rock, TX
Posts: 110
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This is normal for CCD sensors. Some control it better than others, but mine does the same thing, especially if I get the sun in frame when I don't intend to...
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June 6th, 2010, 10:32 AM
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#3 |
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Major Player
Join Date: Jun 2007
Location: The Netherlands
Posts: 710
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If you want footage without smear you will need a camera with a CMOS sensor.
These chips do not produce these 'lightrays'. |
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June 9th, 2010, 12:24 PM
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#4 | |
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Major Player
Join Date: Apr 2010
Location: Reading, PA USA and Athens, Greece
Posts: 269
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Quote:
if you want to limit CCD smear, stop down your f-stops, use a mattebox or a sunshade over the lens; its usually an effect of flare when you are shooting very wide open. i use a mattebox with french and side flags, and that can help me cut 80% of CCD smear out; the rest is knowing what will cause it, and stopping down a bit on the lens. CMOS issues i cannot overcome with the jobs i shoot. |
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