Filmscanners mailing list archive (firstname.lastname@example.org)
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
RE: filmscanners: Scan for television screen
I am not sure what is happening or why; but I received 6 different copies of
this post. All except 1 had different time stamps but the same date.
[mailto:email@example.com]On Behalf Of Steve Bye
Sent: Sunday, April 29, 2001 6:29 PM
Subject: Re: filmscanners: Scan for television screen
While it's true that the resolution of NTSC (American standard) is 720x480,
the pixels are not square - they are about 1 high and 0.9 wide. This means
that, though the resolution is 720x480, the aspect ratio of the image is
actually 640x480, or 4:3.
The answer when all the math is done is that, for NTSC, you want to scan to
end up with an image that is 640x480 pixels. Whichever program is used to
convert the image to a signal viewable on an NTSC monitor will take care of
converting 640 square pixels to 720 rectangular pixels. Programs like Adobe
Premier and Apple's Final Cut Pro do this automatically.
> Don¹t worry about dpi nor TV size, the image size is 720pixels x 480pixels
> regardless of whether you have a 16" or 32" TV. Best save the file as an
> flat PS file, Mac PICT or TIFF.