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Author Topic: Non-ham related tv question  (Read 905 times)
NO2A
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Posts: 1204




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« on: October 08, 2011, 02:35:16 PM »

If you`ve ever taken a digital picture with a camera in raw (non-compressed)file vs. jpeg,you can probably see how much more clarity there is in a raw image file. Even in a camera with lower megapixels there is quite a difference. Apparently the same thing is done with digital tv picture quality. Not including HD tv,does anyone know how much resolution is lost due to compression? When we used to get off the air reception it seemed much more clearer.
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AA4PB
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Posts: 14361




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« Reply #1 on: October 08, 2011, 04:17:57 PM »

If your HD has less resolution than your old analog off-the-air signal then there is something wrong. Could be an issue with your cable company if you use cable.

The compression used shouldn't significantly lower the resolution. It is basically to prevent sending duplicate information that isn't actually contributing anything to the picture anyway.

If you want to get an idea of what HD should look like, go into one of the high-end TV stores and look at their displays. It'll blow your socks off!
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Bob  AA4PB
Garrisonville, VA
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