home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.multimedia
- Path: sparky!uunet!gatech!news.byu.edu!hamblin.math.byu.edu!sol.ctr.columbia.edu!The-Star.honeywell.com!umn.edu!csus.edu!netcom.com!kudzu
- From: kudzu@netcom.com (Michael Sierchio)
- Subject: Re: TV resolution?
- Message-ID: <1992Nov18.181633.26950@netcom.com>
- Organization: True Love, and Home-Grown Tomatoes
- References: <Bxn4Jt.K2p@rahul.net> <1992Nov17.113157.12225@waikato.ac.nz> <1992Nov17.171855.1@ualr.edu>
- Date: Wed, 18 Nov 1992 18:16:33 GMT
- Lines: 26
-
- In article <1992Nov17.171855.1@ualr.edu> djlewis@ualr.edu writes:
- >>>
- >>>>What is the resolution of normal NTSC TVs?
- >>>
- >>> NTSC is an analog format with a total of 525 lines.
- >>> However only 485 lines
- >>> are active. The most universal is about 648x485 pixels;
- >>
- >> Most video digitizers I've come across seem to prefer to give you 640*480
- >> resolution
-
- Bzzt! to all of you. Resolution doesn't mean number of scan lines. It means
- how many lines can be resolved in the horizontal and vertical directions.
-
- This is determined by that radial line test pattern of converging black
- lines on a white board.
-
- My recollection is hazy, but I believe that the best performance (a good
- camera connected directly to a monitor) yields about 500 lines of vertical
- resolution, and 600 lines of horizontal resolution.
-
- --
- +--------------------------------------------------------------------------+
- | Michael Sierchio 1563 Solano Avenue, Suite 123 |
- | kudzu@netcom.com Berkeley, CA 94707-2116 |
- +--------------------------------------------------------------------------+
-