For those of you who want to know the truth and not something overheard in a classroom or made up out of thin air....
Digital cameras replace the strip of crystal-coated plastic film with a high-tech image sensor. An image sensor is a seemingly flat surface composed
of millions of photodiodes. These photodiodes are essentially substitutes for the individual silver halide grains found on film. Each diode collects
light that will end up representing an individual pixel, or dot, in the final image.
The number of pixels necessary to approximate the amount of detail found in an image captured on standard 35mm film is up for debate. Experts in the
industry suggest anywhere from four million to 20 million pixels (four megapixels to 20 megapixels) would do the trick.
So that being said, just about any off the shelf camera with movie mode and pro SLR can shoot in matching quality. Digital film scanners do so at
above 24MP. Last I saw before leaving the NAVY was somewhere around 140MP. Way more sensors than silver halides, thus much higher scan than film can
capture or display on CRT TV's.
This NTSC format uses a 648 by 486 resolution format. This format makes an allowance for a few additional pixels to be created on the screen edge that
may be cut off when displayed. This format is also commonly used by many video compression boards.
Because this format allows you to display a video without losing the "edges" of your video during playback, this resolution seems to be the
preference within the industry.
The D-1 NTSC format uses the same standard frame aspect ratio as the NTSC format. Unlike the NTSC format, the D-1 NTSC format uses a 720 by 486
resolution using rectangular pixels.
The D-1 pixels used in the NTSC format are displayed using a vertical axis.
D-1 NTSC Square Pix
This format uses the same standard frame aspect ratio as the NTSC format. Unlike the NTSC format, the D-1 NTSC Square Pix uses a 720 by 540 resolution
using rectangular pixels.
PAL stands for the Phase Alternating Line. This is a video standard used by the color television industry and is the common standard used in Europe.
This video signal format sets the video to playback at 25 frames per second which contain 625 lines of pixels in each frame.
There are various divisions within the PAL standard which determine what pixel and frame aspect ratios are used. These formats are as follows:
· PAL (resolution 720 x 486)
· D-1 PAL (resolution 720 x 576)
· D-1 PAL Square Pix (resolution 768 x 576)
The D-1 pixels used in the PAL format are displayed using a horizontal axis. This format uses the same standard frame aspect ratio as the PAL format.
Unlike the PAL format, the D-1 PAL uses a 720 by 576 resolution.
D-1 PAL Square Pix
This format uses the same standard frame aspect ratio as the PAL format. Unlike the PAL format, the D-1 PAL Square Pix uses a 768 by 576 resolution
using rectangular pixels.
HDTV (1280 x 720)
The HDTV stands for High Definition Television. This format is a proposed definition which displays at 1280 by 720 resolution.
HDTV (1920 x 1080)
The HDTV stands for High Definition Television. This format is a proposed definition which displays at 1920 by 1080 resolution.
This format uses 2048 x 1536, a standard resolution used for digital film.
Your CRT TV can drift wildly in and out of focus due to its technology being susceptible to magnetic forces. (i.e. polarity shifts, proximity to
higher voltage lines).
LCD monitors are different technology all together. They naturally keep the image stable because each element directly represents the same element
that was used to capture it.
I watched the latest Batman movie in HD. I was not impressed. Reason being was that I was expecting the film effect that you get when you shoot in
24FPS and I got what looks like straight video shot at 29.97.
I happen to like the film effect, so I'm not rushing out and buying it.
Ya'll do what you want.