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ambient lighting behind samsung 5085
I like watching tv in the dark, however i know its not very good for my eyes. So my thought is to put ambient lighting behind the tv. Ideally I'd like to come up with away to do ambient lighting like those philips displays, but that would be difficult, so my other consideration is to take the luminance channel in the component output and use that to control a variable light source based on the material. Anyone have an idea how I could do this.
And if this is too complicated, what would be a good brightness light bulb to put behind the tv and not be too bright.
Thanks
And if this is too complicated, what would be a good brightness light bulb to put behind the tv and not be too bright.
Thanks
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Go to Lowes or similar type of store to get the slim 12" long wall mounted 8 Watts fluorescent light fixture, discard the bulb and order a 6500k fluorescent light bulb from bulbman.com (F8T5/D). The whole thing will cost you about $25!
The best least inexpensive way to provide decent ambient lighting is to buy a lighting fixture (I purchase one from walmart for $6.00, 24"), discard the fluorescent bulb, run up to an aquaruim shop and purchase a 6500K fluorescent bulb(roughly $13.00). Mount and center the fixture half way up the back of the TV. Aesthetics are not crucial due to the tv blocking the fixture. I have a 50" RPLCD and this works great.
This is an silly question. If you place the light behind the TV, are you supposed to shine the light toward the TV or toward the wall?
You can also place a couple of wall sconces on the wall behind or next to your TV and change the bulbs to a 6500k bulb, put the sconces on a dimmer switch. This seems to work perfect in my room and in my media room.
Quote:
The TV screen will block direct light to your eyes. The background light is to light up the wall behind the tv and a small part of the ceiling above the tv. I mounted mine on the wall about 1/3 the height of the TV. If u mount it too low, the ugly cables behind the tv stand will be visible!
| Originally posted by tokerblue This is an silly question. If you place the light behind the TV, are you supposed to shine the light toward the TV or toward the wall? |
The concept with "bias lighting" is to provide a light source (at the correct color temperature) to prevent the irises in your eyes from 'dialing down' due to a concentrated amount of light (the TV) eminating from a small area.
This was almost a must when we all had displays in the 27"-36" size providing large footlamberts of light in a darkened environment.
While it may still be ideal and contribute to a better viewing experience, it may be less necessary with large displays that are properly set up, or more ideally, calibrated.
There is also a bit more to it that just installing a lamp and turning it on. Both AVIA and VE/DVE have sections that address the proper adjustment to the display to work in concert with a backlight for the best blend of the two.
This was almost a must when we all had displays in the 27"-36" size providing large footlamberts of light in a darkened environment.
While it may still be ideal and contribute to a better viewing experience, it may be less necessary with large displays that are properly set up, or more ideally, calibrated.
There is also a bit more to it that just installing a lamp and turning it on. Both AVIA and VE/DVE have sections that address the proper adjustment to the display to work in concert with a backlight for the best blend of the two.
I 've found that recessed lighting with the half moon cover to the viewing side (I hope this makes sense) on a manual dimmer that throws the light downward and behind the TV is a good way to go.
I currently have four recessed in my room, two above and slightly behind the couch and two that do the above, where they illuminate behind my JVC. Works very well, but then again the JVC is bright so I want the entire room to have some low light (ala a theatre).
Recessed lights are a bit more work, but for about $20 each you can get the halo cans and install them yourself.
The ambient light right behind the TV may work for some, but I feel the brighter displays need a different solution (especially from short-throw viewing points) that gets low light evenly distributed throughout the room.
I currently have four recessed in my room, two above and slightly behind the couch and two that do the above, where they illuminate behind my JVC. Works very well, but then again the JVC is bright so I want the entire room to have some low light (ala a theatre).
Recessed lights are a bit more work, but for about $20 each you can get the halo cans and install them yourself.
The ambient light right behind the TV may work for some, but I feel the brighter displays need a different solution (especially from short-throw viewing points) that gets low light evenly distributed throughout the room.
Spikemike,
The Philips 'Ambilight' options of changing the backlight color and intensity along with the picture on the screen is purely gimmick. Those options have no foundation in legitimate imaging science and will disrupt picture quality, accuracy and viewer comfort. To invest any time or money in attempting to emulate such features would be destructive to accurate imaging. Display backlighting should be set for viewing in a dark room. The SMPTE human factors research found that the intensity of illumination on the wall behind should be less than 10% of the peak white of the display. Image content may change from scene to scene but the peak white is always constant, unless you re-adjust the contrast and brightness controls.
All current video displays cannot produce their best picture in a well-lit room. Any light that occurs forward of the frontal plane of the screen will affect the image. Ambient lighting that is not near CIE D65 (6500 kelvins), with a color rendering index of 90 or better, will skew your color perception of the image on the screen. Surrounding surface colors within your field of view with the screen can also affect color perception.
SMPTE's human factors research focused much more on seeing the image correctly rather than eye strain. Viewing comfort and eye strain are discussed more frequently these days in the context of viewing environment ambient lighting. However, "bias lighting" refers to only part of the issues important to an optimum display installation. Backlighting is a much more comprehensive subject and takes into account more human perceptual characteristics.
If you want the best viewing experience your system can provide, attention to detail in your viewing environment conditions will be vital. Much discussion occurs about the hardware and software in home theater forums. The one system component that most often receives the least attention is the viewer. Next to that would be the room itself. This lack of understanding is gradually improving, however.
Best regards and beautiful pictures,
G. Alan Brown, President
CinemaQuest, Inc.
"Advancing the art and science of electronic imaging"
The Philips 'Ambilight' options of changing the backlight color and intensity along with the picture on the screen is purely gimmick. Those options have no foundation in legitimate imaging science and will disrupt picture quality, accuracy and viewer comfort. To invest any time or money in attempting to emulate such features would be destructive to accurate imaging. Display backlighting should be set for viewing in a dark room. The SMPTE human factors research found that the intensity of illumination on the wall behind should be less than 10% of the peak white of the display. Image content may change from scene to scene but the peak white is always constant, unless you re-adjust the contrast and brightness controls.
All current video displays cannot produce their best picture in a well-lit room. Any light that occurs forward of the frontal plane of the screen will affect the image. Ambient lighting that is not near CIE D65 (6500 kelvins), with a color rendering index of 90 or better, will skew your color perception of the image on the screen. Surrounding surface colors within your field of view with the screen can also affect color perception.
SMPTE's human factors research focused much more on seeing the image correctly rather than eye strain. Viewing comfort and eye strain are discussed more frequently these days in the context of viewing environment ambient lighting. However, "bias lighting" refers to only part of the issues important to an optimum display installation. Backlighting is a much more comprehensive subject and takes into account more human perceptual characteristics.
If you want the best viewing experience your system can provide, attention to detail in your viewing environment conditions will be vital. Much discussion occurs about the hardware and software in home theater forums. The one system component that most often receives the least attention is the viewer. Next to that would be the room itself. This lack of understanding is gradually improving, however.
Best regards and beautiful pictures,
G. Alan Brown, President
CinemaQuest, Inc.
"Advancing the art and science of electronic imaging"
I can't find a bulb that meets all these specs. I can find 8W bulbs with 6500k but not with a CRI better then 90, assume the brightness and the color temp are the most important. Plase advise, and let me know if you know where i can get a bulb with those specs.
Thanks
Thanks
I was hoping on going a bit cheaper then buying a specific home theatre model. Can anyone help?
Spikemike,
You can find cheaper fluorescent fixtures and lower quality 6500k fluorescent bulbs at lighting suppliers such as Home Depot, etc. Another source for parts would be aquarium or reptile specialty shops, but their bulbs tend to be higher quality and also more expensive.
Best regards and beautiful pictures,
G. Alan Brown, President
CinemaQuest, Inc.
"Advancing the art and science of electronic imaging"
You can find cheaper fluorescent fixtures and lower quality 6500k fluorescent bulbs at lighting suppliers such as Home Depot, etc. Another source for parts would be aquarium or reptile specialty shops, but their bulbs tend to be higher quality and also more expensive.
Best regards and beautiful pictures,
G. Alan Brown, President
CinemaQuest, Inc.
"Advancing the art and science of electronic imaging"
So what would you say are the 2 most important characteristics, 6500K and 8W? or 6500k and 90+CRI but maybe a bit brighter? Thanks
The brightness can be regulated in a variety of ways, by simply obstructing the lamp in some fashion or neutral-density filtering. SMPTE's recommendations for color television monitor viewing focus predominantly upon color accuracy. All industries that rely on color reproduction fidelity recommend a minimum rating of 90 color rendering index (CRI).
If the color of the wall is just right and the light is just right and you have someone behind the TV making shadow pictures then all these people who make excuses for crummy black levels and contrast ratio will finally be able to see what they've been missing!
Is it me or does this make absolutely no sense in the context of the thread?
hey 62618 can you post a picture of the back of the tv and how you have the Light setup?
Quote:
hey 62618 can you post a picture of the back of the tv and how you have the Light setup?
Quote:
| Originally posted by Artwood If the color of the wall is just right and the light is just right and you have someone behind the TV making shadow pictures then all these people who make excuses for crummy black levels and contrast ratio will finally be able to see what they've been missing! |
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