Discussion in 'General TV Discussions Forum' started by kp1, Aug 2, 2005.
Can anyone help... what is a geometry problem? what happens/doesnt happen?
basically it is where the picture isnt a perfect rectangle within the screen. commonly the edges are concave, or the picture is tilted (one end lower than t'other), or something similar. i think i'm right in saying it only affects CRTs because panels have fixed pixel locations
nearly every crt will have geometry distortion of some sort - normally its slight or within tollerances, and you might not notice. cheap sets (<£200) overscan the picture - that is the picture starts before the edge of the screen and finishes past the other side in order to hide this. widescreen tvs show up the problem more often because of 4:3 mode which is impossible to overscan on (so you see the edge of the picture)
thanks for that. makes sense now
Yes, those things, plus (for example) picture more compressed in some place than another (might result in, say, scrolling titles getting quicker as they go upwards). Basically anything to do with the correct shape of the picture being displayed wrongly.
The only sure way to perfect geometry is direct view flat panels - LCD or Plasma.
If you're using a crt monitor,the adjustment settings on that will give you an idea what geometry issues are all about.
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