I have to write in english, because it would take too long to translate in french. But I do understand a little french too.
.
As I described in the prismasonic thread, I am a member of the german hometheater forum beisammen.de, where some of us (especialy "Theother") developped several anamorphic prisms devices for digital projectors. The prisms work great - we compared them with the ISCO II and the us-Panamorph at our last meeting the 2. beamertreff near Düsseldorf (you can see two self made prisms here ). You can also see pictures and screenshots of my prisms on my homepage (look for the link "Heimkino" and then "selbstgebauter Anamorphot") but the pictures are a bit unsharp because of the camera.
At the moment, we use prisms, that compress the picture vertical. But we also develeppod prisms of horizontal stretch. Theother wrote a small program to calculate the best prisms for each projector but we have standart prisms, which work with simply every projector.
Because of the costs, we use (as the panamorph or the old cinema-panatars) prisms of clearcolor/mirogard glass, which are filled with different fluids. We use water and terpentine or methylnaphtalin, glycerin. The choice of the right fluids is very improtant, because of the dispersion of the colors.
The total costs of the prisms are about Euro 50,- and two days of work.
And they work quite as good as the ISCO II .
The (enormous) thread at beisammen.de is here .
This is a picture of my switchable prisms at the 4:3-through-setting
Au revoir,
Simon, qui aime beaucoup Carcans plage et Maubuisson prés de Bordeaux
[/url]
. Je ne sait pas, si la dispersion des coleurs sera ok ???.
(enlever??)? Il n´y a pas de problèmes avec la correction des trapeze. Peux tu récrire ta question?
)
