Jump to content



Sign up for a free account to remove the pop-up ads

Signing up for an account is fast and free. As a member you can join in the conversation, enter contests and remove the pop-up ads that guests get. Click here to create your free account.

Photo

Do the Grey Bars Hurt a Widescreen TV?


This topic has been archived. This means that you cannot reply to this topic.
3 replies to this topic

#1 of 4 OFFLINE   Michael Reuben

Michael Reuben

    Studio Mogul



  • 21,769 posts
  • Join Date: Feb 12 1998

Posted August 17 2002 - 03:17 AM

The gray bars are intended to minimize the risk of burn-in. Black bars pose much more of a threat. Burn-in results from uneven exposure of the phosphors that produce the image; an area that is black is getting zero exposure. The gray is designed to be an "average" of the normal exposure.

Regardless of the color, the key to avoiding burn-in is proper adjustment of the TV. Nearly all TVs arrive from the factory with the contrast set way too high, often at levels that could cause burn-in within minutes given the right image. Back it down immediately, and then get yourself a calibration disc (like AVIA or Video Essentials) to set contrast, brightness and other values properly.

M.
COMPLETE list of my disc reviews.       HTF Rules / 200920102011 Film Lists

#2 of 4 OFFLINE   Michael Reuben

Michael Reuben

    Studio Mogul



  • 21,769 posts
  • Join Date: Feb 12 1998

Posted August 17 2002 - 04:26 AM

Quote:
By the way, the delivery guys from Best Buy actually goosed up the brightness and contrast by putting the picture on "Sports Mode" when they set it up.
Not surprising. The ridiculously high levels at which most TVs are set are a product of salesmanship. On a brightly lit showroom floor, the picture that people tend to favor is the one that "pops" most dramatically. In fact, those high contrast and brightness settings are obscuring detail and distorting both shapes and colors, but it takes a while to notice that (and you have to know what to look for).

M.
COMPLETE list of my disc reviews.       HTF Rules / 200920102011 Film Lists

#3 of 4 OFFLINE   HarleyMYK

HarleyMYK

    Agent



  • 41 posts
  • Join Date: Mar 08 2002

Posted August 17 2002 - 03:04 AM

I just bought a Toshiba 42H81. If I watch a widescreen movie (2.35:1), I obviously get black bars at top and bottom, and I assume that is not a burn in problem.

If I watch 4:3 TV in normal mode I get grey bars on either side. Am I risking any burn with this? Is there a way to turn them off so they are black? Not too much of an issue, since the recommended stretch mode is pretty OK.

Overall, I am pretty happy with the set. I watched Tombstone (Vista Director's Cut DVD with my also new Tosh 4800) last night and I have never seen such a good picture on a TV.

#4 of 4 OFFLINE   HarleyMYK

HarleyMYK

    Agent



  • 41 posts
  • Join Date: Mar 08 2002

Posted August 17 2002 - 04:18 AM

Thanks for the information Michael.

I started with Movie mode and then used Avia yesterday - although I keep losing my preferences somehow. I also can't figure out how to do the white setting (the first video configuration shown), but I just went directly to the advanced DIY section. Maybe they talk about it more in the early sections of the DVD.

By the way, the delivery guys from Best Buy actually goosed up the brightness and contrast by putting the picture on "Sports Mode" when they set it up.