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Path: utzoo!mnetor!seismo!lll-lcc!ptsfa!well!rab
From: rab@well.UUCP (Bob Bickford)
Newsgroups: rec.video,comp.sys.amiga,comp.graphics
Subject: Re: Videotape single frame recording
Message-ID: <2254@well.UUCP>
Date: Thu, 25-Dec-86 03:38:02 EST
Article-I.D.: well.2254
Posted: Thu Dec 25 03:38:02 1986
Date-Received: Thu, 25-Dec-86 18:38:24 EST
References: <5331@ukma.ms.uky.csnet> <1140@cbmvax.cbmvax.cbm.UUCP> <225@gaia.UUCP> <168@scubed.UUCP>
Organization: Whole Earth Lectronic Link, Sausalito, CA
Lines: 28
Keywords: video,animation
Summary: What kind of a spec is "250 lines per inch"?
Xref: mnetor rec.video:216 comp.sys.amiga:1063 comp.graphics:108

In article <168@scubed.UUCP>, warner@scubed.UUCP (Ken Warner) writes:
> We here at s-cubed have a Sony U-Matic VO-5850. Its controlled by a Lyon-Lamb 
> VAS IV controller. Our graphics machine is an upgraded IRIS 2400T. While the
> resolution on the Sony leaves much to be desired (approx. 250 lines per inch)
> it is a real sturdy machine. We are well over 100,000 cycles (frames) with no
> maintainance problems. I suspect that the typical consumer VTR might not last
> through all those cycles. 
> Ken
> warner@scubed.arpa

   Ahem.  The Sony unit you mention is a professional unit and it will
record an image with about 300 lines per picture height (which is the
standard way of expressing resolution in TV land --- specify how many
alternating lines of 0% black and 100% white can be resolved on a
horizontal line in a distance equal to the picture height.)
   I don't know where you got a spec like "250 lines per inch" but
it's totally meaningless unless you're talking about a particular
display (and then it had better be a rather small one!).  The 5850
is an excellent machine and is light-years away from VHS or Beta
as far as image quality, stability, and yes ruggedness.

-- 
Robert Bickford    {hplabs, ucbvax, lll-lcc, ptsfa, msudoc}!well!rab
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