Finished my DIY curved screen set-up with pics - Page 3

I also thought this statement to be true: higher quality lenses (pricier) advertise less pincushioning. Is it true or not? if so the curvature of the scrreen would also depend on the lense's ability to reduce this effect?

TR6 .. Nice job. Looks great, and a very helpful post. I also like the TR6 in the garage.

Now I am trying to find all those that stated they were building an aluminum frame.

I saw that Brite White screen fabric from Vutec and it isnt all that bad.

From my research and what I've been told by those "in the know", the variance in pincushion between lenses varies from virtually insignificant to non-existent. In other words, they all pincushion about the same with the same image size and throw ratio.

I was looking for pincushion data for various lenses. Could you please give more details or post a pointer.

My thinking is the same. The anamorphic lenses positioned for home use do not have notable correction for pincushioning.

Hi George / tr6,

Which powered curtain track did you go with ?

How is the noise level during operation ?

Do you have two sets of curtains, one for masking 16:9 & 2.34 & another set for full closing ?


Thanks,
John

George,

Thanks, thats the model (CL800) I plan to use. It is sold on powercurtain.com also under the same part number.

How far out from the screen surface did you mount the curtain track?

Thanks for sharing.


John

Pretty cool tr6. I've had it in my plans to use the same remote curtain system exactly the way your using it.

I would have to mount mine to my soffit/ceiling above my screen, hopefully the track is pliable enough to follow the curve of my curved screen wall and therefore the screen.

Did you curve the track as close to your screen as possible, or does it go straight across? If I remember the back of your screen and wall are flat

Can you also tell me what is the thickness of the hardware (up and down)? I had to mount my screen higher than I initially thought so I don't have much space (about an inch or so) above my screen's border. I don't mind covering some of my screens border at the top because it is about 3.5" thick but I don't want to cover to much if I go with this.

Don't be shy about posting some pics of the new look

Thanks. Hmmmm.. gonna need to bend though. My screen goes in 3" at the center from the sides but since I only need to go from the fully open to a 16:9 mask hopefully I can slightly arch without making it constrict the cabling. Thanks again.

oman321,

You might call some custom drapery shops in your town to see if they can bend your track for a small fee . Not sure if it takes special dies or clamps for every shape of track to hold them so the track doesn't crunch up during the process. Let us know what you find out

John

I am also jealous!

Do I need a curved screen?

I am planning a 2.40 aspect ratio, 173"W and 72"H screen (187" diagonal) with the projector at a distance of 31'.

Using the 'circle calculator' at 1728.com, my 'segment height' (i.e. 'depth of curve' from edge to center) is only 0.84". Is a curved screen necessary, and is it worth the trouble? I understand that it is necessary if the throw distance is small. I am trying to maximize the throw distance for a number of reasons (put the PJ in a different room behind the theater and isolate PJ noise, reduce distortion by minimizing zoom, and reduce the need for curved screens).

Also, I am assuming that the distortion that the curved screen needs to correct for using an anamorphic lens is in only one plane - horizontal, by curving the flat screen in only one radius. There is no need to correct for it in the other vertical plane. Correct?

Thanks.

Will you use an anamorphic lens?




Correct. Pincushion is bi-product of horizontal expanding anamorphic lenses, and a curved screen wil correct this. The pincushion can be seen seen in both the V and H directions, however the amount in the vertical is so small that many won't even notice the curvature.

Hi George (aka TR6),

How's the theater, still greatly enjoying it ?