TV Resolution question [Archive] - Audio & Video Forums


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01-10-2006, 06:47 AM
Lets assume a HD reception of 1920 x 1080, and a TV that can display this.

Is this resolution per inch?

If yes, this means a 1" screen would have a TOTAL resolution of 1920x1080.
Then a 2" screen would hat a TOTAL resolution of 3840 x 2160.
Then a 70" screen would have a TOTAL resolution of 134400 x 75600.
(lets assume screens are square!)

My question is, what size does the film maker film the movie in?
If it's made in 35" then on a 70" tv the scaler would have to double the resolution?

I guess what I am trying to get at is perfect hd is 1920 x 1080 but at what size?

IS this making sense??

01-10-2006, 07:31 AM
Lets assume a HD reception of 1920 x 1080, and a TV that can display this.

Is this resolution per inch?

It's in actual pixels. You get 1920x1080 points of information that you can spread out over a big area on a big TV or a small area on a small TV. You get an array of 1920 points horizontally and 1080 points vertically for a total of 2,073,600 points (1920x1080=) in the grid.

01-10-2006, 07:32 AM
That's the total number of pixels in the viewing area. IOW, given the same resolution a larger screen will have larger pixels. The larger screen would have fewer "pixels per square inch" as it were.

As for what resolution movies are shot in, well, it's not quite that simple. Pixels aren't an issue in true "film" since it's an analog/optical/chemical situation. Pixels only enter the picture when electronic media is an issue, such as with animation.

01-10-2006, 07:45 AM
1920x1080 is resolution per se, not per inch or any other measurement. A film or other source would be created digitally or transferred to that format to be shown on any size screen with its own native resolution, optimally one with a 1920x1080 pixel count across the entire panel. A display with any other native resolution would have to downconvert the 1920x1080 to its own format. (No 1920x1080 material actually exists yet in the consumer world.) In other words, display size and pixel count are not inherently related. The requisite pixel count is theoretically possible on displays of any size and kind, except that plasma cells are generally too big to achieve it on anything but a monster, and CRTs have a similar problem with real estate to create the neecessary scan lines.

The area in which scale measurements become important is the chip size that holds the pixels that create each screen image. The tiny LCD and LCoS chips can actually hold that many pixels. The DLP chips wobulate a smaller pixel count to reach the full resolution.

01-10-2006, 07:08 PM
The resolution of 35mm film is said to be between 20 and 80 million pixels.They can all be converted to HD tv. The new generation of 1080 line tvs have about 2 million pixels more than twice the now going obsolete 768 tvs. Most pc monitors have 1080 verical lines . 768 tvs are now HD lite.

01-10-2006, 07:15 PM
By the time that 35mm film reaches your local theater, generations removed from the master and mishandled by nearly everyone, its resolution has taken a severe hit, but it's still higher than anything you can show in the house.

01-11-2006, 06:32 AM
If I am understanding this, 1920 x 1080 is the TOTAL resolution of the screen, no matter
what size it is?

01-11-2006, 06:37 AM