>In article <dpppca$kh***@rainier.uits.indiana.edu>,
>glhan***@steel.ucs.indiana.edu says...
>>
>> I know different 8mm versions have different recording formats.  But what
>> are the differences in blank tapes bought to be used in one peice of
>> equipment or another?  I know very little about video recording, but I
>> work as a retail schlub, and once in a while a customer will ask me which
>> tape they need.  And I'm never sure how to answer.
>
>The difference is in tape formulation and whether it can be used to
>store the higher density data in the Hi8 / Digital8 formats.
>
>Standard tapes if used in a Hi8/D8 camera will be speeded up.

> In article <MPG.1e2cbeac6be7d318989***@news.chc.ihug.co.nz>,
> Rob J  <rob.j@nospam.nospam> wrote:
> >In article <dpppca$kh***@rainier.uits.indiana.edu>,
> >glhan***@steel.ucs.indiana.edu says...
> >>
> >> I know different 8mm versions have different recording formats.  But what
> >> are the differences in blank tapes bought to be used in one peice of
> >> equipment or another?  I know very little about video recording, but I
> >> work as a retail schlub, and once in a while a customer will ask me which
> >> tape they need.  And I'm never sure how to answer.
> >
> >The difference is in tape formulation and whether it can be used to
> >store the higher density data in the Hi8 / Digital8 formats.
> >
> >Standard tapes if used in a Hi8/D8 camera will be speeded up.
>
>
> Seriously, the Hi8/D8 recorder will recognize that it's a standard tape
> and run it faster?  That's actually pretty darn cool.  What fraction of
> recording time is lost?

>In article <dptug2$5k***@rainier.uits.indiana.edu>,
>glhan***@steel.ucs.indiana.edu says...
>> In article <MPG.1e2cbeac6be7d318989***@news.chc.ihug.co.nz>,
>> Rob J  <rob.j@nospam.nospam> wrote:
>> >In article <dpppca$kh***@rainier.uits.indiana.edu>,
>> >glhan***@steel.ucs.indiana.edu says...
>> >>
>> >> I know different 8mm versions have different recording formats.  But what
>> >> are the differences in blank tapes bought to be used in one peice of
>> >> equipment or another?  I know very little about video recording, but I
>> >> work as a retail schlub, and once in a while a customer will ask me which
>> >> tape they need.  And I'm never sure how to answer.
>> >
>> >The difference is in tape formulation and whether it can be used to
>> >store the higher density data in the Hi8 / Digital8 formats.
>> >
>> >Standard tapes if used in a Hi8/D8 camera will be speeded up.
>>
>>
>> Seriously, the Hi8/D8 recorder will recognize that it's a standard tape
>> and run it faster?  That's actually pretty darn cool.  What fraction of
>> recording time is lost?
>
>1/3 in PAL
>
>> Is it safe to say that Hi8 and D8 will work in anything that takes
>> standard 8mm tapes?
>
>Yes

"Rob J" <rob.j@nospam.nospam> wrote in message
news:MPG.1e2cbeac6be7d318989b39@news.chc.ihug.co.nz...
> In article <dpppca$kh***@rainier.uits.indiana.edu>,
> glhan***@steel.ucs.indiana.edu says...
>>
>> I know different 8mm versions have different recording formats.  But what
>> are the differences in blank tapes bought to be used in one peice of
>> equipment or another?  I know very little about video recording, but I
>> work as a retail schlub, and once in a while a customer will ask me which
>> tape they need.  And I'm never sure how to answer.
>
> The difference is in tape formulation and whether it can be used to
> store the higher density data in the Hi8 / Digital8 formats.
>
> Standard tapes if used in a Hi8/D8 camera will be speeded up.

"Dave Martindale" <da***@cs.ubc.ca> wrote in message
news:dpu9vs$2hu$1@swain.cs.ubc.ca...
> "PTRAVEL" <ptravel88-use***@yahoo.com> writes:
>
> >Standard 8 and Hi 8 run at exactly the same speed.  The difference, as I
> >recall, is that the color signal is split off in Hi8, allowing higher
> >bandwidth, providing better resolution.
>
> The colour signal is *always* split off in any "color under" system,
> which includes BetaMax, VHS, the Super versions of those, and 8/Hi8.
> The colour subcarrier is recorded directly on tape, while the luminance
> signal is used to FM modulate a high-frequency carrier whose frequency
> is above the colour band.
>
> What Hi8 (and SVHS etc) do is raise the frequency of the luminance
> carrier.  This provides more separation between chroma and luma
> carriers, which in turn allows higher-frequency luminance to be recorded
> and recovered, which gives finer luminance detail (with no improvement
> in colour).  Thus, the total recorded signal has a wider bandwidth.

>
> This is in contrast to laserdisc and old professional analog video
> recorders, which FM modulate the carrier with the *entire* composite
> video signal including colour information.  These give better quality,
> but require a timebase corrector for playback.  Then there's Betacam,
> which separates the signal into 3 components, time-compresses all of
> them, and then records them sequentially (Y, Cb, Cr).  Both of these
> avoid color-under recording but require more total recording bandwidth
> from the tape than the consumer tape formats.
>
> >Hi 8 tape has higher coercivity to
> >handle the additional bandwidth.  The camera tells the difference based
on
> >holes in the bottom of the case.  Back when I was shooting Hi8, in a
pinch,
> >I'd drill the extra hole in a standard 8 cassette -- it always worked
fine.
>
> Dave
>

>
> "Rob J" <rob.j@nospam.nospam> wrote in message
> news:MPG.1e2cbeac6be7d318989b39@news.chc.ihug.co.nz...
> > In article <dpppca$kh***@rainier.uits.indiana.edu>,
> > glhan***@steel.ucs.indiana.edu says...
> >>
> >> I know different 8mm versions have different recording formats.  But what
> >> are the differences in blank tapes bought to be used in one peice of
> >> equipment or another?  I know very little about video recording, but I
> >> work as a retail schlub, and once in a while a customer will ask me which
> >> tape they need.  And I'm never sure how to answer.
> >
> > The difference is in tape formulation and whether it can be used to
> > store the higher density data in the Hi8 / Digital8 formats.
> >
> > Standard tapes if used in a Hi8/D8 camera will be speeded up.
>
> Standard 8 and Hi 8 run at exactly the same speed.  The difference, as I
> recall, is that the color signal is split off in Hi8, allowing higher
> bandwidth, providing better resolution.  Hi 8 tape has higher coercivity to
> handle the additional bandwidth.  The camera tells the difference based on
> holes in the bottom of the case.  Back when I was shooting Hi8, in a pinch,
> I'd drill the extra hole in a standard 8 cassette -- it always worked fine.