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From: adv@druid.UUCP (DeVossA)
Newsgroups: net.video
Subject: camera evaluation
Message-ID: <917@druid.UUCP>
Date: Tue, 7-May-85 15:47:28 EDT
Article-I.D.: druid.917
Posted: Tue May  7 15:47:28 1985
Date-Received: Wed, 8-May-85 05:24:04 EDT
Organization: AT&T Information Systems Laboratories, Denver
Lines: 54

I'ld like to share an equipment evaluation
I did this past week which may shed some light
on camera as well as VCR capabilities.

I demo'ed a Panasonic WV3240-12X industrial quality camera

The camera's specs are:
lines of resolution:350
signal/noise(video luminance):46db
lens:f2.0 with 12x zoom 10-120mm
2/3 inch 5MHZ newvicon tube
minimum illumination:20 lux
auto/manual iris
auto/manual white balance
variable tint
video titler and other non-esential whistles and bells

The camera I was comparing it with (and own) is a sony CCD-G5:

lines of resolution:250
luminance:46db
lens:f1.4 with 6x zoom 12-72mm
minimum illumination:28 lux
ccd solid state pickup element
auto/manual white balance 
one whistle and one bell

The discovery I made was that with the luminance the same,
the lines of resolution made little impact on the picture quality.
In fact the Sony had a lower background noise level and had richer colors.
The lighting, recorder(Magnavox portable) and tape type(TDK-EHG)
were identical.

Am I missing something obvious or does the difference of 100 lines
of resolution make little difference in picture quality?
Looking at industrial/pro camera specs the figures that
creep up are the luminance ratings as well as lines of resolution.

Portable VHS and Beta Hi-Fi's have an average luminance
of around 40db. RCA boasts 45db.
The evaluation of Sony's super beta at CBS test labs(Video Review's
June issue) rated it at 40.2db.
Apparently for compatibility reasons Sony chose not to
improve the video signal to noise.
In response to a question posted earlier, Sony went out of their
way to make super beta compatible.

In response to this posting has anyone had similar
results in comparing camera's or care to comment?
 
Should I be looking at a better VCR to improve the quality of my shots?

			Andrew DeVoss 
                          druid!adv