Panasonic PT-AT5000 3D Projector - 3D Tech

We suspect one of the main reasons it’s taken Panasonic so long to get

the AT5000E out has been a desire to suppress crosstalk noise – the

dreaded double ghosting phenomenon that still troubles many 3D displays,

including Sony’s much more expensive VW90ES projector. With this in mind, the AT5000 runs its trio of LCD panels at 480Hz.


also apparently some other technology going on under the hood designed

to keep crosstalk to a minimum, but Panasonic refused to explain how it

worked, referring to it with a knowing smile as exclusive ‘black box’

technology. Fingers crossed we’ll be able to squeeze something less

mysterious out of them when we’re actually reviewing the projector.
The extent to which Panasonic has catered for 3D in the AT5000’s set up

tools is startling. For one thing, you can adjust separately the colour

balance for each ‘eye’ of a 3D source, to correct for potential

imbalances in the stereoscopic source material. Even more intriguing is

the facility on offer for adjusting a 3D image’s convergence point.


to make 3D viewing less tiring, this feature displays a little chart

showing the maximum and minimum parallax levels for comfortable viewing

at different screen sizes, and then shows the actual parallax level of

the image being watched as a yellow line that should sit between the two

white ‘extremities’. If any part of the yellow line sticks out beyond

the min/max parallax levels, then the image you’re watching could cause

tiredness. So the projector allows you to reduce the convergence point

of the image until it fits within the min/max lines.

There’s an

obvious issue with this tool in that film-makers who actually care about

3D like to define parallax levels when they’re mastering their films

for home cinema reproduction. So they may not take too kindly to the

idea that this key setting can be adjusted by the end user.

However, it seems to us that since different viewers can have widely

different tolerance levels and personal preferences for 3D viewing, it’s

perfectly reasonable for a projector to try and accommodate this

variety. Especially if it helps more people enjoy 3D without feeling


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