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Discussion Starter · #1 ·
I've read for twenty years that the first thing you do to adjust your TV is set the sharpness to the absolute minimum, because its not REAL detail, but only imitates detail by creating a kind of regular noise. Is that true? It sure seems to be on my LCD. It make a big improvement. I think I'll try comparing on Avia.


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Joe

My current idea of the best value:

Boxlight 38t

Panasonic RP91

RCA DTC-100

Da-Lite 100" 4:3 1.3gain

Studio Experience SE616's

and some other stuff.
 

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Discussion Starter · #3 ·
So what do you mean "apparent"?


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Joe

My current idea of the best value:

Boxlight 38t

Panasonic RP91

RCA DTC-100

Da-Lite 100" 4:3 1.3gain

Studio Experience SE616's

and some other stuff.
 

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well, if you increase 'sharpness' on a signal, you're technically increasing the resolution. You can't increase the resolution of a video signal (with a peaking circuit), so by boosting the high frequencies, you percieve an increase in sharpness, amongst all the other crap the peaking circuit will boost.
 

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Discussion Starter · #5 ·
If a single pixel is just one color and one level of brightness, what exactly is happening when one is "boosting the high frequencies"?


Or what "crap" is being boosted?


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Joe

My current idea of the best value:

Boxlight 38t

Panasonic RP91

RCA DTC-100

Da-Lite 100" 4:3 1.3gain

Studio Experience SE616's

and some other stuff.
 

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Discussion Starter · #6 ·
I just noticed I misspelled "sharpness" in the topic. I'm still laughing! What an igmo!


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Joe

My current idea of the best value:

Boxlight 38t

Panasonic RP91

RCA DTC-100

Da-Lite 100" 4:3 1.3gain

Studio Experience SE616's

and some other stuff.
 

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"what exactly is happening when one is "boosting the high frequencies"?"


It is very similar to turning the treble control up on a preamp, you're increasing the relative level of the high frequency component of the video signal. Any noise in the signal will also be boosted.
 

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One man's noise is another's man's nirvana...
 

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Discussion Starter · #11 ·
HEY! I love the golf channel.


So what do the "high frequencies" look like in a pixel?


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Joe

My current idea of the best value:

Boxlight 38t

Panasonic RP91

RCA DTC-100

Da-Lite 100" 4:3 1.3gain

Studio Experience SE616's

and some other stuff.
 

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Joe, see my new thread. Take this as a formal request for your energetic participation! I'm ordering the 38T from Hank tomorrow.


Dan
 

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Discussion Starter · #13 ·
Do I get a commission?


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Joe

My current idea of the best value:

Boxlight 38t

Panasonic RP91

RCA DTC-100

Da-Lite 100" 4:3 1.3gain

Studio Experience SE616's

and some other stuff.
 

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Joe,


That "high frequency crap" -- it looks like the color and fine details of the picture are dancing and not stable. VHS tape is a good example. Crummy network DTV is another (MPEG artifacts). Most sets have "noise filter" settings that are just big sharpness switches. Mine seems to help DTV a lot.


But you can get quite a picture sometimes on HDTV by turning the Sharpness up.

 

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Discussion Starter · #15 ·
Why would sharpness help HDTV?


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Joe

My current idea of the best value:

Boxlight 38t

Panasonic RP91

RCA DTC-100

Da-Lite 100" 4:3 1.3gain

Studio Experience SE616's

and some other stuff.
 
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