[Leaplist] Dell 23" LCD (1080p w/50, 000:1 contrast) for $169 shipped -- WAS: LCDs at Costco ...

[Richard F. Ostrow Jr.]

On Tue, September 29, 2009 1:36 pm, Bryan J. Smith wrote:
> Are you using a CRT now?  I would assume so.  There are also additional
> issues with using LCDs for such.

No, I am currently using an LCD.

> Understand that most commodity TN pannels have 2-6ms refresh rates
> and are more than capable of the 8ms required to do 120Hz.  The
> problem is sending that rate down the DVI-D or HDMI cable at 1080p
> (1920x1080 at 50, 59.94 and 60Hz).

Runs 1680x1050 over DVI-D (doesn't support VGA). HDMI is only capable of
60 Hz (tested) on this screen... which makes it completely useless.

> Now it's possible to do so over the mini-DB15 analog (VGA), but then
> we come back to the ADC at the panel that must take that rate.  In a
> nutshell,
> I haven't seen any LCD that takes, as an _input_ more than 60Hz at 1080-
> 1560 lines.

This one does, as it is required to.

http://www.samsung.com/us/consumer/office/monitors/specialty/LS22CMFKFV/ZA/index.idx?pagetype=prd_detail

> When a LCD says it does 120Hz, it does _not_ mean the input actually
> allows 120Hz.  It only does its refresh 120Hz times per second.  Why is
> that important?  Because movies are at 24Hz, while TV is at 30 or 60Hz,
> so 120Hz is a perfect multiple of all three (3).

Granted, they do "interpolation" on the cheaper displays.

> So, again, when you buy 120Hz, you don't always get 120Hz.
>
> I also haven't seen an 1080 at 120Hz interlace standard, which would
> solve the issue.  That would allow one to use the existing DVI-D and HDMI
> bandwidth that you have at 1080 at 60Hz non-interlaced.
>
> Hence why most shutter glasses are still used with CRTs.
>
>
>
> ----- Original Message ----
> From: Richard F. Ostrow Jr. <rich at warfaresdl.com>
>
> I wish it gave some decent information in its specifications... I was
> specifically looking for refresh rate, and did not find any such info. As
> such, I'd have to assume 60 Hz (until proven wrong)... which would mean
> I'm definately not interested. I have other hardware that will not work on
> a display with less than 120 Hz (3D LCD glasses - every other frame
> blocked on each eye at 60 Hz, transforms 3D scenes into true 3D scenes).
> Setting the display to less than 120 Hz just causes it to refuse to run.
>
> On the other hand, I personally am not in the market for a new screen...
> just thought I'd put the above in the mix to consider... in case people
> start buying those glasses.
>
>
>
>  --
> Bryan J  Smith           Professional, Technical Annoyance
> Linked Profile:         http://www.linkedin.com/in/bjsmith
> ----------------------------------------------------------
> Red Hat:  That 'other' American software company built on
> open customer selection of options and value, instead of
> controlled distribution channels of forced bundle and lock
>
>
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