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Originally Posted by kg_evilboy It's the resolution.
Standard definition = 640x480.
High definition = 720p, 1080i (i as in interlaced or interpolated = bad), 1080p.
Actually 720p is not a big difference to 640p. 1080p is really different, though. |
You almost got it. SD = 480i, which is 720x480. Unless you have a 1080p TV (which are rare) you'd probably be better off with a high quality 720p set with a good internal scaler.
As far as the difference between 480i/p and 720p, lets look at the pixel counts...
720x480=345600
1280x720=921600
1920x1080=2073600
So you can see that while 720p is a 3x increase in pixels, 1080i/p is only approx. a 2x improvement over 720p. When we were looking at HD sets the best looking one we could find in our price segment was a native 720p set (Sony 50" a10). It turns out it also has a high quality scaler.