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1500:1 vs. 2500:1 / Contrast Ratio

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March 23, 2005 9:37:03 PM

Archived from groups: alt.tv.tech.hdtv (More info?)

I am confused ...
Again.
;-)

Looking at the Samsung DLP5085 and 5063 which contrast ratios of 2500 and
1500 to one respectively.
A guy I spoke today who installs hi-end AV systems said to definately go
with the higher ratio TV while a salesperson I tend to trust stated that the
1500 ratio is much better.
??????
Any advice appreciated.
Thanks
Tec
March 24, 2005 3:25:12 AM

Archived from groups: alt.tv.tech.hdtv (More info?)

Higher ratio is better, if all else is equal.
Clay
"Tecumseh" <tecumsehcanada@rogers.com> wrote in message
news:Wdadnc8zMd8zYdzfRVn-iQ@rogers.com...
> I am confused ...
> Again.
> ;-)
>
> Looking at the Samsung DLP5085 and 5063 which contrast ratios of
2500 and
> 1500 to one respectively.
> A guy I spoke today who installs hi-end AV systems said to
definately go
> with the higher ratio TV while a salesperson I tend to trust stated
that the
> 1500 ratio is much better.
> ??????
> Any advice appreciated.
> Thanks
> Tec
>
>
March 24, 2005 5:24:25 AM

Archived from groups: alt.tv.tech.hdtv (More info?)

"Tecumseh" <tecumsehcanada@rogers.com> wrote in message
news:Wdadnc8zMd8zYdzfRVn-iQ@rogers.com...
>I am confused ...
> Again.
> ;-)
>
> Looking at the Samsung DLP5085 and 5063 which contrast ratios of 2500 and
> 1500 to one respectively.
> A guy I spoke today who installs hi-end AV systems said to definately go
> with the higher ratio TV while a salesperson I tend to trust stated that
> the
> 1500 ratio is much better.
> ??????
> Any advice appreciated.
> Thanks
> Tec
>
>
you'd trust what a salesman told you? Higher contrast ratio = better if
every other parameter is equal.
Related resources
Anonymous
March 24, 2005 9:00:56 AM

Archived from groups: alt.tv.tech.hdtv (More info?)

On Thu, 24 Mar 2005 02:24:25 GMT, "Panic" <panic@tampabay.rr.com>
wrote:

>"Tecumseh" <tecumsehcanada@rogers.com> wrote in message
>news:Wdadnc8zMd8zYdzfRVn-iQ@rogers.com...
>>I am confused ...
>> Again.
>> ;-)
>>
>> Looking at the Samsung DLP5085 and 5063 which contrast ratios of 2500 and
>> 1500 to one respectively.
>> A guy I spoke today who installs hi-end AV systems said to definately go
>> with the higher ratio TV while a salesperson I tend to trust stated that
>> the
>> 1500 ratio is much better.
>> ??????
>> Any advice appreciated.
>> Thanks
>> Tec
>>
>>
>you'd trust what a salesman told you? Higher contrast ratio = better if
>every other parameter is equal.

True.
I'm not familiar with any of the above RPTV:s but I have the following
general comment regarding contrast:

I'm afraid that the focus on the contrast ratio specification might be
the reason why new (especially direct view LCD/plasma panels) comes
with a high gloss surface.

I suspect that such a surface makes it possible to _measure_ the very
high contrast ratios of several thousends but in real life the
reflected image from the surrounding is better suppressed in a panel
with a matt surface (and good antireflex treatment).

A good standard feature in LCD panels was previously the matt surface.
This seems to be more or less forgotten these days both in TV-screens
and PC-monitors. I hope the consumers decide against this trend.
/Jan
March 24, 2005 1:30:44 PM

Archived from groups: alt.tv.tech.hdtv (More info?)

On Wed, 23 Mar 2005 18:37:03 -0500, "Tecumseh"
<tecumsehcanada@rogers.com> wrote:

>Looking at the Samsung DLP5085 and 5063 which contrast ratios of 2500 and
>1500 to one respectively.

Theoretical contrast levels are not that important.

More important in this comparison is that the 5085 uses the HD2+ chip
and the 5063 uses the HD3. The latter is an economy chip with half as
many mirrors, using wobulation to expand the image. Most agree that
the HD2+ produces a better picture.
March 25, 2005 3:34:32 AM

Archived from groups: alt.tv.tech.hdtv (More info?)

"DaveR" <NOSPAM_drubin@NOSPAM_i-2000.com> wrote in message
news:z9xCQh+umtseeUSoaDzjFoHpSJ0r@4ax.com...
> On Wed, 23 Mar 2005 18:37:03 -0500, "Tecumseh"
> <tecumsehcanada@rogers.com> wrote:
>
> >Looking at the Samsung DLP5085 and 5063 which contrast ratios of
2500 and
> >1500 to one respectively.
>
> Theoretical contrast levels are not that important.
>
> More important in this comparison is that the 5085 uses the HD2+
chip
> and the 5063 uses the HD3. The latter is an economy chip with half
as
> many mirrors, using wobulation to expand the image. Most agree that
> the HD2+ produces a better picture.


They are if all else is equal.
Clay
March 25, 2005 3:34:33 AM

Archived from groups: alt.tv.tech.hdtv (More info?)

"Badger" <cferriola@gmail.com> wrote in message
news:s0J0e.56887$wl4.1733534@twister.southeast.rr.com...
>
> "DaveR" <NOSPAM_drubin@NOSPAM_i-2000.com> wrote in message
> news:z9xCQh+umtseeUSoaDzjFoHpSJ0r@4ax.com...
> > On Wed, 23 Mar 2005 18:37:03 -0500, "Tecumseh"
> > <tecumsehcanada@rogers.com> wrote:
> >
> > >Looking at the Samsung DLP5085 and 5063 which contrast ratios of
> 2500 and
> > >1500 to one respectively.
> >
> > Theoretical contrast levels are not that important.
> >
> > More important in this comparison is that the 5085 uses the HD2+
> chip
> > and the 5063 uses the HD3. The latter is an economy chip with half
> as
> > many mirrors, using wobulation to expand the image. Most agree that
> > the HD2+ produces a better picture.
>
>
> They are if all else is equal.
> Clay
>
>

I have heard the same Clay.
Anonymous
March 25, 2005 11:44:15 AM

Archived from groups: alt.tv.tech.hdtv (More info?)

Tecumseh wrote:
> I am confused ...
> Again.
> ;-)
>
> Looking at the Samsung DLP5085 and 5063 which contrast ratios of 2500 and
> 1500 to one respectively.
> A guy I spoke today who installs hi-end AV systems said to definately go
> with the higher ratio TV while a salesperson I tend to trust stated that the
> 1500 ratio is much better.
> ??????
> Any advice appreciated.
> Thanks
> Tec

Mitsubishi specifies 50:1 contrast ratio on their finest CRT based
RPTVs. That's in a dark room. Those RPTVs, IMHO, provide much better
image quality than the Samsung DLPs. It isn't the ratio that is
important (once it is great enough) it is the linearity of the contrast
curve. Most fixed pixel displays have great contrast dynamic range, but
quite bad signal to noise ratios at the low end of that range.

--
Matthew

I'm a contractor. If you want an opinion, I'll sell you one.
Which one do you want?
!