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February 16th, 2004, 02:47 PM
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#1 |
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Major Player
Join Date: Jan 2003
Location: Las Cruces, NM
Posts: 288
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What causes a scoreboard's lights to smear?
I'll bet it's been discussed here before but I couldn't find it: What causes a scoreboard's lights to smear?
TIA, Randy |
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February 16th, 2004, 03:12 PM
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#2 |
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Wrangler
Join Date: Feb 2002
Location: Cleveland, Ohio
Posts: 1,933
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What kind of a scoreboard? Like at a major league ball park? Smear in what way? You mean during animations, from one frame to the next (as can be seen with the naked eye)? Or do you mean haloing (in a camera like the XL1)? The former is caused by retention of energy in the elements of the display panel (light bulbs or otherwise)--they don't turn off sharply enough. The latter is caused by refraction within the lens, and can sometimes be palliated by removing your UV filter from your lens, if you have one on.
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February 16th, 2004, 04:04 PM
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#3 |
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Major Player
Join Date: Jan 2003
Location: Las Cruces, NM
Posts: 288
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A Basketball scoreboard where lots of red lights make up the numbers (for lack of a better description). Yes, only through the cam lens and not to the naked eye.
>>The latter is caused by refraction within the lens, and can sometimes be palliated by removing your UV filter from your lens, if you have one on.<< I do have one on and was really hoping for a simple solution....THANKS!!!! ...I'll try to remove it next time. Thanks again, Randy |
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February 17th, 2004, 04:11 AM
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#4 |
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RED Code Chef
Join Date: Oct 2001
Location: Holland
Posts: 12,514
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Otherwise try to see if changing shutter speed helps.
Is this "smearing" happening all the time or just when the numbers change? Because DV has problems with the color red. I've seen smearing (might not be the exact word for what I've seen) on my XL1S with red when nothing was moving. It was more like a blockyness surrounding the reds.
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February 17th, 2004, 08:33 AM
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#5 |
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Major Player
Join Date: Jan 2003
Location: Las Cruces, NM
Posts: 288
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Hi Rob,
The numbers are indeed red and they always "smear" (looks like someone literally (sligtly) smeared lipstick or something ) to the right. It happens even when the cam is on a tripod. Actually for this job I won't have to use the shot but was wondering what to try if I need it next time. I've been shooting at 60 fps...how fast would you try Rob? BTW I didn't notice it in the viewfinder while I was shooting it. Thanks guys, Randy |
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February 18th, 2004, 04:11 PM
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#6 |
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RED Code Chef
Join Date: Oct 2001
Location: Holland
Posts: 12,514
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You won't notice it in the viewfinder because of the low resolution
of the LCD screen in there. It sounds to me like that it's the typical red blight and changing the shutter won't help a bit. To be sure I'd have to see a picture though. Can you put one up? If not, shoot me one per e-mail please.
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February 19th, 2004, 08:58 AM
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#7 |
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Major Player
Join Date: Jan 2003
Location: Las Cruces, NM
Posts: 288
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>>Can you put one up? If not,
shoot me one per e-mail please.<< Hey thanks Rob, I've already deleted the clips from my hard drive but I will when I get a chance. Thanks again, Randy |
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