Fisheye Effect

----- HDTV Magazine Tips List -----

I have seen that regardless of source. It is the way the film or video
was shot and the lens used.

Richard Fisher
HD Library is Published by Tech Services
A division of Mastertech Repair Corporation
http://www.hdtvmagazine.com/forum/index.php

Jim Flynn wrote:
> ----- HDTV Magazine Tips List -----
>
> I've noticed on numerous occasions when watching HD
> programming that, when the camera pans left or right
> on long shots such as a landscape or sporting event,
> there is a slight, yet discernable, fisheye lens
> effect to the image.
>
> Is this due to the HD camera lens, an issue with my
> CRT rear-projection Mitsubishi TV, or my
> less-than-perfect vision? It seems to be more
> prevalent with live and videotaped programming than
> with movies, thus leading me to believe it is indeed
> the HD camera.
>
> Jim Flynn
>
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Richard,
Could the LCD lag time also contribute to the problem as Rodolfo said? i have read that there are some new LCD Displays that have improved the response time. I don't remember which brands claimed improvement.

Bob Bullock
-------------- Original message ----------------------
From: Richard Fisher <[email protected]>
> ----- HDTV Magazine Tips List -----
>
> I have seen that regardless of source. It is the way the film or video
> was shot and the lens used.
>
> Richard Fisher
> HD Library is Published by Tech Services
> A division of Mastertech Repair Corporation
> http://www.hdtvmagazine.com/forum/index.php
>
> Jim Flynn wrote:
> > ----- HDTV Magazine Tips List -----
> >
> > I've noticed on numerous occasions when watching HD
> > programming that, when the camera pans left or right
> > on long shots such as a landscape or sporting event,
> > there is a slight, yet discernable, fisheye lens
> > effect to the image.
> >
> > Is this due to the HD camera lens, an issue with my
> > CRT rear-projection Mitsubishi TV, or my
> > less-than-perfect vision? It seems to be more
> > prevalent with live and videotaped programming than
> > with movies, thus leading me to believe it is indeed
> > the HD camera.
> >
> > Jim Flynn
> >
> > __________________________________________________
> > Do You Yahoo!?
> > Tired of spam? Yahoo! Mail has the best spam protection around
> > http://mail.yahoo.com
> >
> > To unsubscribe please click: [email protected]
> >
> > To receive the digest mode (one email a day made from all posted that same
> day) send an email to:
> > [email protected]
> >
> >
>
>
> To unsubscribe please click: [email protected]
>
> To receive the digest mode (one email a day made from all posted that same day)
> send an email to:
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----- HDTV Magazine Tips List -----

Not for this artifact. This is a common artifact. Nothing mysterious
here. Have noticed it since 1992 and widescreen laserdisc.

I believe it is common with 2.35 because that uses an anamorphic lens to
capture the image which creates a pincushion problem that in turn
requires an anamorphic lens and curved screen to remove the pincushion
problem creating the perception of straight lines. When you transfer
that system to a flat screen you get the fish eye effect.

Pure speculation based on what little memory cells I have left...



Richard Fisher
HD Library is Published by Tech Services
A division of Mastertech Repair Corporation
http://www.hdtvmagazine.com/forum/index.php

[email protected] wrote:
> ----- HDTV Magazine Tips List -----
>
> Richard,
> Could the LCD lag time also contribute to the problem as Rodolfo said? i have read that there are some new LCD Displays that have improved the response time. I don't remember which brands claimed improvement.
>
> Bob Bullock
> -------------- Original message ----------------------
> From: Richard Fisher <[email protected]>
>
>>----- HDTV Magazine Tips List -----
>>
>>I have seen that regardless of source. It is the way the film or video
>>was shot and the lens used.
>>
>>Richard Fisher
>>HD Library is Published by Tech Services
>>A division of Mastertech Repair Corporation
>>http://www.hdtvmagazine.com/forum/index.php
>>
>>Jim Flynn wrote:
>>
>>>----- HDTV Magazine Tips List -----
>>>
>>>I've noticed on numerous occasions when watching HD
>>>programming that, when the camera pans left or right
>>>on long shots such as a landscape or sporting event,
>>>there is a slight, yet discernable, fisheye lens
>>>effect to the image.
>>>
>>>Is this due to the HD camera lens, an issue with my
>>>CRT rear-projection Mitsubishi TV, or my
>>>less-than-perfect vision? It seems to be more
>>>prevalent with live and videotaped programming than
>>>with movies, thus leading me to believe it is indeed
>>>the HD camera.
>>>
>>>Jim Flynn
>>>
>>>__________________________________________________
>>>Do You Yahoo!?
>>>Tired of spam? Yahoo! Mail has the best spam protection around
>>>http://mail.yahoo.com
>>>
>>>To unsubscribe please click: [email protected]
>>>
>>>To receive the digest mode (one email a day made from all posted that same
>>
>>day) send an email to:
>>
>>>[email protected]
>>>
>>>
>>
>>
>>To unsubscribe please click: [email protected]
>>
>>To receive the digest mode (one email a day made from all posted that same day)
>>send an email to:
>>[email protected]
>
>
>
>
> To unsubscribe please click: [email protected]
>
> To receive the digest mode (one email a day made from all posted that same day) send an email to:
> [email protected]
>
>


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