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  #1  
Old 07-25-2007, 04:24 AM
jim evans
 
Posts: n/a
Default VGA vs DVI Monitor Hookup

I just got a new LCD monitor today -- my first. It's doing something
I think is called ghosting. I'm using VGA because that's what my
video card supports. I talked to a tech support guy and he said DVI
cannot have ghosting, and if I used DVI it would eliminate the
problem.

Before I go spring for a new video card I want to know if this is
true. Does anybody here know?
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  #2  
Old 07-25-2007, 10:31 AM
Sleepy
 
Posts: n/a
Default Re: VGA vs DVI Monitor Hookup



"jim evans" <jimsTAKEOUTnews2@houston.rr.com> wrote in message
news:j7gda355k3nqlk96qfjq5tro0fjajg1lp2@4ax.com...
>I just got a new LCD monitor today -- my first. It's doing something
> I think is called ghosting. I'm using VGA because that's what my
> video card supports. I talked to a tech support guy and he said DVI
> cannot have ghosting, and if I used DVI it would eliminate the
> problem.
>
> Before I go spring for a new video card I want to know if this is
> true. Does anybody here know?


Yes its true. VGA is analogue and DVI is digital. My HannsG monitor has both
VGA and DVI inputs but came with only a VGA cable - I tried it by borrowing
a DVI to VGA adapter and the image was slightly blurred (or ghosted) but
when I bought a DVI lead it produced a clear sharp image with no ghosting.

However, my brother bought a more expensive Samsung monitor with only VGA
input and we had to fiddle with the settings to get a sharp image. 72hz
refresh rate worked best. You could try differant refresh rates first and
look at the monitor controls before shelling out on a new card.

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  #3  
Old 07-25-2007, 04:33 PM
jim evans
 
Posts: n/a
Default Re: VGA vs DVI Monitor Hookup

On Wed, 25 Jul 2007 09:31:31 GMT, "Sleepy" <nospam@here.com> wrote:

Thanks for the reply.
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  #4  
Old 07-25-2007, 04:52 PM
Michael Hawes
 
Posts: n/a
Default Re: VGA vs DVI Monitor Hookup


"jim evans" <jimsTAKEOUTnews2@houston.rr.com> wrote in message
news:harea39e8urmbat1l3qbno3odv5c3b0c0o@4ax.com...
> On Wed, 25 Jul 2007 09:31:31 GMT, "Sleepy" <nospam@here.com> wrote:
>
> Thanks for the reply.
>

If there is an auto setup, try that, or have a fiddle with the settings
on the monitor, but only change one at a time and return it to original
vakue before fiddling with another.

Mike.


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  #5  
Old 07-25-2007, 11:47 PM
DaveW
 
Posts: n/a
Default Re: VGA vs DVI Monitor Hookup

The DVI cable will definitely improve the image, BUT if you mean that images
in motion ghost, that means your video card is too underpowered to drive the
resolution required by the LCD monitor.

--
---------------------
DaveW
"jim evans" <jimsTAKEOUTnews2@houston.rr.com> wrote in message
news:j7gda355k3nqlk96qfjq5tro0fjajg1lp2@4ax.com...
>I just got a new LCD monitor today -- my first. It's doing something
> I think is called ghosting. I'm using VGA because that's what my
> video card supports. I talked to a tech support guy and he said DVI
> cannot have ghosting, and if I used DVI it would eliminate the
> problem.
>
> Before I go spring for a new video card I want to know if this is
> true. Does anybody here know?



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  #6  
Old 07-26-2007, 08:24 AM
jim evans
 
Posts: n/a
Default Re: VGA vs DVI Monitor Hookup

On Wed, 25 Jul 2007 15:47:06 -0700, "DaveW" <nothing@bot.org> wrote:

>The DVI cable will definitely improve the image, BUT if you mean that images
>in motion ghost, that means your video card is too underpowered to drive the
>resolution required by the LCD monitor.


No not in motion. Static characters. See this example
http://img329.imageshack.us/img329/3...p725181aq0.jpg

This was taken with a digital camera and enlarged/enhanced to make the
problem obvious.
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  #7  
Old 07-26-2007, 09:55 AM
helmut
 
Posts: n/a
Default Re: VGA vs DVI Monitor Hookup


"jim evans" <jimsTAKEOUTnews2@houston.rr.com> wrote in message
newssiga3hv3v84fgav8127n1394osfqggsa4@4ax.com...
> On Wed, 25 Jul 2007 15:47:06 -0700, "DaveW" <nothing@bot.org> wrote:
>
>>The DVI cable will definitely improve the image, BUT if you mean that
>>images
>>in motion ghost, that means your video card is too underpowered to drive
>>the
>>resolution required by the LCD monitor.

>
> No not in motion. Static characters. See this example
> http://img329.imageshack.us/img329/3...p725181aq0.jpg
>
> This was taken with a digital camera and enlarged/enhanced to make the
> problem obvious.


make sure you are using the best resolution for your lcd monitor..unlike crt
monitors lcd's only look good in one resolution..usually but not
always...the dox will say ..
15" = 1024 * 768.
17" = 1280*1024.
19" = 1280*1024.
22" = 1680 * 1050.

failing that get a better gfx card.


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  #8  
Old 07-26-2007, 10:07 AM
Paul
 
Posts: n/a
Default Re: VGA vs DVI Monitor Hookup

jim evans wrote:
> On Wed, 25 Jul 2007 15:47:06 -0700, "DaveW" <nothing@bot.org> wrote:
>
>> The DVI cable will definitely improve the image, BUT if you mean that images
>> in motion ghost, that means your video card is too underpowered to drive the
>> resolution required by the LCD monitor.

>
> No not in motion. Static characters. See this example
> http://img329.imageshack.us/img329/3...p725181aq0.jpg
>
> This was taken with a digital camera and enlarged/enhanced to make the
> problem obvious.


You know, that almost looks like the effects of ClearType. The
ClearType rendered text, should be the stuff on the right hand
column of samples here.

http://www.mezzoblue.com/i/articles/....cleartype.png

http://en.wikipedia.org/wiki/Cleartype

But it is so hard to tell. Some of what I see in your picture, will be
an artifact from the camera taking a picture of an LCD. I don't like the
row of colored pixels under each row of text, because that should not be
ghosting. Ghosting caused by cable reflections, should be restricted to
things to the left or right of the dominant (black) text. I don't know
where the colored stuff comes from under each line of text.

If it was my setup, I'd start by trying another VGA cable. But what
I'm seeing in your picture, could be more than one effect at work.

Paul
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  #9  
Old 07-26-2007, 10:58 AM
Michael Hawes
 
Posts: n/a
Default Re: VGA vs DVI Monitor Hookup


"Paul" <nospam@needed.com> wrote in message news:f89o4s$pgq$1@aioe.org...
> jim evans wrote:
>> On Wed, 25 Jul 2007 15:47:06 -0700, "DaveW" <nothing@bot.org> wrote:
>>
>>> The DVI cable will definitely improve the image, BUT if you mean that
>>> images in motion ghost, that means your video card is too underpowered
>>> to drive the resolution required by the LCD monitor.

>>
>> No not in motion. Static characters. See this example
>> http://img329.imageshack.us/img329/3...p725181aq0.jpg
>>
>> This was taken with a digital camera and enlarged/enhanced to make the
>> problem obvious.

>
> You know, that almost looks like the effects of ClearType. The
> ClearType rendered text, should be the stuff on the right hand
> column of samples here.
>
> http://www.mezzoblue.com/i/articles/....cleartype.png
>
> http://en.wikipedia.org/wiki/Cleartype
>
> But it is so hard to tell. Some of what I see in your picture, will be
> an artifact from the camera taking a picture of an LCD. I don't like the
> row of colored pixels under each row of text, because that should not be
> ghosting. Ghosting caused by cable reflections, should be restricted to
> things to the left or right of the dominant (black) text. I don't know
> where the colored stuff comes from under each line of text.
>
> If it was my setup, I'd start by trying another VGA cable. But what
> I'm seeing in your picture, could be more than one effect at work.
>
> Paul


As mentioned, check you are at Native Resolution. Open Help & Support
and enter 'cleartype'. Follow the instructions, if it is ON, turn off, if it
is OFF, turn on, find best setting.

Mike.


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  #10  
Old 07-31-2007, 07:21 PM
jim evans
 
Posts: n/a
Default Re: VGA vs DVI Monitor Hookup

On Tue, 24 Jul 2007 22:24:46 -0500, jim evans
<jimsTAKEOUTnews2@houston.rr.com> wrote:

>I just got a new LCD monitor today -- my first. It's doing something
>I think is called ghosting. I'm using VGA because that's what my
>video card supports. I talked to a tech support guy and he said DVI
>cannot have ghosting, and if I used DVI it would eliminate the
>problem.
>
>Before I go spring for a new video card I want to know if this is
>true. Does anybody here know?


To whom it may interest. I bought a DVI cable and it fixed the
ghosting completely.
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