----- HDTV Magazine Tips List -----
> One of the more annoying characteristics of the current crop of shallow
> cabinet RPTVs is the geometric distortion that is always present.
This is due
> to the inordinately short optical path from the optics, to the
mirror, then on
> to the screen. Unavoidable pincushion distortion results in the image.
This is part and parcel of ANY short throw projection system or wide
field telescope. Nature of the beast.
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 -----
>
> One of the more annoying characteristics of the current crop of shallow
> cabinet RPTVs is the geometric distortion that is always present. This is due
> to the inordinately short optical path from the optics, to the mirror, then on
> to the screen. Unavoidable pincushion distortion results in the image.
> Letterbox edges are curved at the top and bottom of the screen and pillarbox
> edges are even more curved at the sides of 1.33:1 programs. This distortion
> is not quite as noticeable in motion programming but it is revealed from time
> to time. CRTs can correct for this via electromagnetic or electrostatic
> deflection of the electron beam. Fixed pixel projectors lack this facility.
>
> Large sized flat panel displays do not have this problem but are much more
> expensive per square inch of screen surface. Front projection has marvelous
> benefits but must be viewed in the dark for a decent image. The best of both
> worlds is a two-piece rear projection system, but this requires more space
> behind the screen wall and more expense than a front projection rig.
>
> Image fidelity takes a back seat to other considerations all the time. Some
> of these are: economics, convenience, conflicting activities in the viewing
> environment, room decor, light from windows, veiwing distance, etc., etc. The
> art and science of designing or selecting the best display for a particular
> installation lies in achieving the best balance of all factors. Too often the
> viewer has not taken an important factor into account before making a
> purchase. Unfortunately, the error becomes evident after the purchase when
> the viewer has the opportunity to watch the display under all conditions in
> the system. A skilled and experienced imaging science practitioner can
> anticipate these pitfalls and is the best resource for system design help and
> selecting the best display for a given lifestyle.
>
> Best regards and beautiful pictures,
> Alan Brown, President
> CinemaQuest, Inc.
>
www.cinemaquestinc.com
>
> "Advancing the art and science of electronic imaging"
>
>
>>----- HDTV Magazine Tips List -----
>>
>>I wonder how these will compare in price and performance to front
>>projectors? I figure I'll be looking at a new display in about 12-18
>>months and had been thinking i'd go with a front projector when it's time
>>
>>Aaron W. Thompson wrote:
>>
>>>----- HDTV Magazine Tips List -----
>>>
>>>
>
>
http://news.sel.sony.com/en/press_room/ ... ay/sxrd_gr
> and_wega/release/22354.html
>
>
>>>
>>>----- Original Message ----- From: "Hugh Campbell"
>>><
[email protected]>
>>>To: "HDTV Magazine" <
[email protected]>
>>>Sent: Thursday, June 01, 2006 11:02 PM
>>>Subject: New SXRD's Announced
>>>
>>>
>>>
>>>>----- HDTV Magazine Tips List -----
>>>>
>>>>Here is a link to the new Sony models coming in "early fall". Two
>>>>new XBR SXRD models accepting 1080P, in 70" and 60" priced at $7,800
>>>>and $5,300, etc.
>>>>
>>>>
>
>
http://news.sel.sony.com/en/press_room/ ... _displays/
> lcd/release/22416.html
>
>
>>>>
>>>>Hugh
>>>>
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>>>>
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>>>
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>>>
>>
>>To unsubscribe please click:
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