Screen contrast

Archived from groups: comp.sys.laptops (More info?)

Bob wrote:
> My old laptop had brightness and contrast control. This new one only
> has brightness control. Is there a app that can increase contrast and
> even color saturation?
>
> Thanks
> Bob

Are you looking in the display adapter properties? There is typically a
tab "color" or "gamma" that does this adjustment. What is the laptop?

Q

Archived from groups: comp.sys.laptops (More info?)

No, and it's not necessary. The old laptop was a DSTN screen (dual
scan), and the control that you call contrast really wasn't a contrast
control but rather a control for the scanning circuits that allowed you
to adjust them to achieve the best possible contrast -- which may have
been something like 50:1.

Your new screen is "active matrix" or "TFT" (thin film transistor) and
doesn't scan. It's contrast is always optimized, and the contrast ratio
is something between 250:1 and 800:1.


Bob wrote:

> My old laptop had brightness and contrast control. This new one only has
> brightness control. Is there a app that can increase contrast and even color
> saturation?
>
> Thanks
> Bob
>
>

Archived from groups: comp.sys.laptops (More info?)

Thanks for that explanation.

Bob


"Barry Watzman" <WatzmanNOSPAM@neo.rr.com> wrote in message
news:4239A40C.8070607@neo.rr.com...
> No, and it's not necessary. The old laptop was a DSTN screen (dual scan),
> and the control that you call contrast really wasn't a contrast control
> but rather a control for the scanning circuits that allowed you to adjust
> them to achieve the best possible contrast -- which may have been
> something like 50:1.
>
> Your new screen is "active matrix" or "TFT" (thin film transistor) and
> doesn't scan. It's contrast is always optimized, and the contrast ratio
> is something between 250:1 and 800:1.
>
>
> Bob wrote:
>
>> My old laptop had brightness and contrast control. This new one only has
>> brightness control. Is there a app that can increase contrast and even
>> color saturation?
>>
>> Thanks
>> Bob