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SDTV is basically an analog square box which first came and used the resolution of 4:3. SDTVs were big and bulky giant boxes but with the square image inside it. And now we have something what we call an HDTV which uses the resolution size 16:9 which is more than a Standard TV. It is a wide screen display of image which is rectangular in shape unlike our SDTVs and has more like a cinema look. * Now since older TV sets used 4:3 ratio there is a huge difference in the quality of picture we r looking at. We notice at times when we watch an old movie on our new sets of TV or HDTV we end up getting an empty bars around or at the top. They are called Pillar boxing or line boxing and that space will remain there until and unless we go to our tv settings and change resolution from 4:3 to 16:9. Now that the image is zoomed we find that empty space no more. This is all trying to show us the true aspect of the older version of the TV from 4:3 resolution on a new monitor that uses 16:9 ratio.

* We get a bright sharp image where we can see even the smallest details very clearly and gives less trouble to eyes in an HDTV whereas the picture is not so clear one in Standard TV. It is less bright and sharp.

* Off-Air Signals (antennas). (n.d.). Retrieved April 9, 2015, from http://www.kenrockwell.com/hdtv/basics.htm