Anamorphic lense for 2.35:1 DVD movies

[rockhard]

The CEDIA show featured alot of display manufacturers showing autoscoping add on anamorphic lense systems.

Prismasonic anamorphic lens is a high quality optical product to boost
your digital projector to the next level. It makes a variable horizontal stretch to the projected image, and thus supports perfectly the constant height, 2.35:1 CinemaScope setup, which is also used in the real movie theatres

I have a 110" diag screen which translates to height 54" x width 96" ( 4.5 ft x 8 feet ) I want to maintain the constant height with variable width using a panamorphic lense from Prismasonic .

So the next screen purchase will be a 2.35:1 cinemascope screen 54" x 126" ( 4.5 ft x 10.5 ft. )

With the Prismasonic you can use the optics ( rather than the scaler electronics ) to black out the bars on either side when showing " pass through mode " 16 x 9 aspect ratio . This makes your 2.35:1 screen look like previously mentioned 16:9 54" x 96" ( 4.5 ft x 8 ft ) screen.

The beauty of this is no remote controls , automatic mechanical movement of lense into place or masking screens needed.

This will become even more important when we get into HDTV widescreen movies and will preserve even more resolution ( 30% loss without lense ) of HDTV 1080P vs 480i DVD that we now use .

AVS link on subject here :

Prismasonic anamorphic lenses -
http://www.avsforum.com/avs-vb/showthread.php?t=578367



All I can say is I want one ...

 

[Peter Parker]

Don't forget to take into account the light loss when using the lens in scope mode, so calculate for that or your image may be a lot dimmer than expected, even with the added brightness from vertically stretching the source to remove the black bars.

You will notice the added brightness when using it in pass-through mode for 16:9 stuff, and one way to get round scope movies looking dimmer is to leave the lens in scope mode all the time and use the pj or scaler to make the source 16:9. You do lose resolution doing this, but you'd be hard pushed to notice, especially as DVD sources are only 720 x 480 or 576 (16:9 with the lens at scope is around 980 x 720 on a 1280 x 720 pj IIRC).

Definitely worth having IMHO.

Gary.

 

[rockhard]

Don't forget to take into account the light loss when using the lens in scope mode, so calculate for that or your image may be a lot dimmer than expected, even with the added brightness from vertically stretching the source to remove the black bars.

Thanks for the tip will consider this and the extra screen square footage ( 2.35:1 aspect ) when choosing next PJ ( EPSON cinema 800 with 1600 ANSI ) was a good choice and would accomodate the loss of light given that my Hitachi TX-100 has 1200 ANSI .

I think that I am happy untill 1080P versions come on the market and then I will flip my display and screen plus add Anamorphic lense ...

 

[Peter Parker]

Even taking into consideration the real world lumens compared to the advertised figures (probably under 1000 lumens), you should still have enough light with that pj for a 12ft wide cinemascope screen

Gary.

 

[rockhard]

12ft wide cinemascope screen

I love to but realistically a 10.5 ft cinemascope screen is what I an aiming at so mabey I don't need to wait for 1080P PJ and just flip 16:9 Da-Lite HCCV screen for a 2.35:1 cinemascope screen and then add Anamorphic lense for now ....

Sounds like Christmas will be good this year ..