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K700i vid recording off tv screens;-) |
ijefferies
Joined: Dec 24, 2004
Posts: 201
PM |
100hz is the refresh rate of the tv screen, or scanning speed. It's supposed to give a sharper image. Many new uk tv are now 100hz. |
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Dragonfly_TP
Joined: Aug 11, 2004
Posts: > 500
From: Belgium
PM |
My tv is only 50hz and banding can clearly be seen (like big black bars) my pc monitor is set at 80hz but also here banding is clear (smaller black bands) but my laptop screen (TFT) is set at 60hz and no banding visible.
Everything was ugly, but your beautiful face. |
Dragonfly_TP
Joined: Aug 11, 2004
Posts: > 500
From: Belgium
PM |
I have sensitive eyes and I see clearly the blinking of tv screens set at 50hz or crt monitors set below 80hz. TFT screens that have no defect do not blink, so maybe the 60hz is a dummy setting or if it is really 60hz it works better than with CRT.
Everything was ugly, but your beautiful face. |
blackspot
Joined: Sep 06, 2004
Posts: > 500
From: Philippines
PM |
Yeah, like this one taken from a computer monitor.
or depending on the refresh rate of the monitor, the banding will appear differently.
resistance is futile. |
Debu
Joined: Jan 15, 2003
Posts: > 500
From: Colchester, UK
PM |
As gov pointed out, the real reason for those bands to appear, would be interference fringes. As most of you know that light has dual nature (Einstiens theory of wave-particle dualism), so in the wave nature of the light, a certain amount of diffraction happens around the camera aperture. This diffraction sometimes causes opposite waves to cancel each other out, and make bands called diffraction fringes or interference fringes. Which is the dark band you see. |
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Posted: 2005-01-14 11:41
