"The Film Stud" <thefilmstud@netzero.net> wrote in message



> If VHS is not good enough. How about a Digital 8 camcorder. My friend

> has one and claims it shoots 500 lines.


> If this is true, why can't I see much of a difference on my

> television.


> His camera does look better but not twice as good.


> Is this true, that he shoots 500 lines?


[See "PTRAVEL's" excellent response above, first - below is

a response I offered in another NG to your same question...]


A couple of the top end D8 cameras (well, there were only a few,

ever...) can get close to this under ideal conditions, but there are

other quality issues involved (tonality, relative freedom from

negative picture artifacting, low-light range, color-quality, etc. - see

www.David-Ruether-Photography.com/vid_pict_characts.htm for some idea

of what we are up against in our struggle for high image quality

in TV) - and even if the camera did a true 500 lines (TV, horizontal

resolution), this is only in one direction. Both do a maximum of

about 480 lines vertical resolution NTSC (though an inferior camera

may not achieve this), narrowing the better camera's advantage.

As another pointed out, the limiter for you may be the monitoring

quality (most commercial SD TVs will not show 540 TV-res

horizontal lines), further narrowing the differences - and you may

not yet be aware of other subtle differences in the picture. Also,

it is best to start with the highest-quality master if you will be

duplicating by analogue means, since there will be quality loss

with each generation (though immediately converting an analogue

medium to digital will minimize this). As others pointed out, VHS

is the lowest-quality standard video medium out there, and even a

single generation from copying once reduces the quality level to

unacceptable (and the original itself was unacceptable for commercial

use unless the subject shot was unique - see the footage used on such

programs as "Americas Funniest Videos" for an idea of what to

expect [if most of this stuff does not look relatively terrible to you

compared with what you are producing, you are either using a

$50,000 camera hooked up to a VHS deck {which still looks bad...},

or you are a non-critical viewer using a poor 19" or smaller TV

without "S" input capability for judging]). VHS is an unacceptable

acquisition medium for production of a good commercial video,

though for a very specialized production, with careful use, and

for private distribution, it may be adequate...


 David Ruether