| Author |
Message |
bachiano
Joined: 13 Mar 2006
Posts: 163
|
| Posted: Wed Feb 15, 2012 1:29 pm Post subject: |
|
|
AFryia
What brand screen are you using?
|
|
| Back to top |
|
 |
bachiano
Joined: 13 Mar 2006
Posts: 163
|
| Posted: Wed Feb 15, 2012 10:31 pm Post subject: |
|
|
An idea.
What about buying the Studiotek 130 I presented in the first post and put a velvet surround on it?
I could then play with any size I want and when I'm happy, cut it up and do a DIY.
Been looking for days for an 87" or 92" with 1.3 gain pull down and can't find one.
I do keep bumping in to threads that brag about the Studiotek 130 .
I know draganm says "Perf'ing drops the light output of the screen"
but since the screen is rated at 1.3 gain I assume the 1.3 was measured with the holes in the material?
I've also seen some seller advertising 1.3 gain screens, but when you look at the specs is says "white matte" uhmmm....???
|
|
| Back to top |
|
|
Spanky Ham
Joined: 22 Mar 2006
Posts: 5643
Location: Comedy Central
|
|
| Back to top |
|
|
AFryia
Joined: 09 Mar 2006
Posts: 965
Location: S.E. Michigan VPH-G70Q
|
| Posted: Thu Feb 16, 2012 12:01 am Post subject: |
|
|
| bachiano wrote: | It has been said before that getting too close to the edge of the tubes causes geometry problems with the G70.
Afryia. Do you have geometry problems with your rasters maxed out?
|
Geometry along the edges for any PJ with rasters maxed will be more challenging.
What you get is slight pin, bow or a little of both (wave) along the perimeter. I'd say +80% of the image is geometrically spot on. The other 20% or so you can only tell with grid patterns and strings. You can't see it in video or film.
That being said with all three rasters maxed they all experience similar distortions so you are still able to get excellent convergence.
MAG focus is a little soft, optical focus may be a little soft around the edges. That is true to varying degrees for any raster size. You generally focus on screen center so it usually not a distraction in real world viewing.
Here is another trick. I setup using the 4:3 raster on a 16:9 screen so the top and bottom raster/pattern projects off the screen. These areas I don't worry about geometry unless it influences the geometry on the screen. So I only adjust for the best on screen geometry.
Then as a last resort tweak with Zone.
|
|
| Back to top |
|
|
AFryia
Joined: 09 Mar 2006
Posts: 965
Location: S.E. Michigan VPH-G70Q
|
| Posted: Thu Feb 16, 2012 12:03 am Post subject: |
|
|
| bachiano wrote: | AFryia
What brand screen are you using? |
I' using a Da-Lite Perm-Wall Cinema Vision 1.3 gain 52x92 (56x96 frame).
$497 new in 2003.
|
|
| Back to top |
|
|
bachiano
Joined: 13 Mar 2006
Posts: 163
|
| Posted: Tue Feb 21, 2012 8:46 pm Post subject: |
|
|
What do you guys think about this screen?
http://www.htdepot.com/ProductDetails.asp?ProductCode=FXO169A%2D100%2DBK
Is this really 1.3 gain.
How do I measure the 1.3 gain to make sure I'm getting what I pay for?
I called their tech department and they said it was indeed 1.3 gain even though the description says Matte White?
Any one have experience with HTDepot and Focupix?
Thanks
|
|
| Back to top |
|
|
ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
|
| Posted: Tue Feb 21, 2012 9:39 pm Post subject: |
|
|
Never heard of the Focupix, but I highly doubt that's more than 1.1 gain. The list of screens that are sold as 1.3 gain, but which actually test closer to 1.1 or even 1.0 gain is very long.
I'm amused their tech department says it's 1.3 gain even tough it's matte white. Matte white IS 1.0 gain. The only way to add gain is to make it more reflective. It could be near for 1.1 or 1.15 gain, which is where most 1.3-gain screens actually measure.
Unless you can find a third-party review that says otherwise, I'd assume it's closer to 1.0 than it is to 1.3.
SC
|
|
| Back to top |
|
|
Spanky Ham
Joined: 22 Mar 2006
Posts: 5643
Location: Comedy Central
|
| Posted: Tue Feb 21, 2012 10:02 pm Post subject: |
|
|
|
Was there something wrong with the Elite screens that I recommended? They have an 87" wide pulldown for $169 MSRP.
|
|
| Back to top |
|
|
bachiano
Joined: 13 Mar 2006
Posts: 163
|
| Posted: Tue Feb 21, 2012 11:45 pm Post subject: |
|
|
Hi Spanky
Nothing wrong with it. I just could not find the 87" elite with a 1.3 gain.
|
|
| Back to top |
|
|
MikeEby
Joined: 24 Jun 2007
Posts: 5237
Location: Osceola, Indiana
|
|
| Back to top |
|
|
ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
|
| Posted: Wed Feb 22, 2012 1:40 am Post subject: |
|
|
| bachiano wrote: | | Nothing wrong with it. I just could not find the 87" elite with a 1.3 gain. |
But, that's because they're just being honest about the gain.
I don't think you're going to find a "budget" screen (unless you buy used) that's actually 1.3 gain. All the cheap stuff claims 1.3 gain when they're actually 1.1 because who's going to actually measure it?
SC
|
|
| Back to top |
|
|
ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
|
| Posted: Wed Feb 22, 2012 1:43 am Post subject: |
|
|
| MikeEby wrote: | | Unless it’s tenderized I don't think I could live with a pull down screen... |
Interesting, Mike... I've heard of tensioned screens, but I don't think I've seen them tenderized! Does it make the screen juicier? Can you buy regular screen material and DIY tenderize yourself?
SC
|
|
| Back to top |
|
|
Spanky Ham
Joined: 22 Mar 2006
Posts: 5643
Location: Comedy Central
|
| Posted: Wed Feb 22, 2012 2:39 am Post subject: |
|
|
Read Jeff's screen test.
| Description: |
|
Download |
| Filename: |
accucal_front_projection_screen_report.pdf |
| Filesize: |
370.92 KB |
| Downloaded: |
214 Time(s) |
|
|
| Back to top |
|
|
ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
|
| Posted: Wed Feb 22, 2012 3:54 am Post subject: |
|
|
Wow, I don't remember ever seeing that, Spanky... That's an awesome document. Thanks for posting!!!
SC
|
|
| Back to top |
|
|
MikeEby
Joined: 24 Jun 2007
Posts: 5237
Location: Osceola, Indiana
|
| Posted: Wed Feb 22, 2012 4:18 am Post subject: |
|
|
| ecrabb wrote: | | MikeEby wrote: | | Unless it’s tenderized I don't think I could live with a pull down screen... |
Interesting, Mike... I've heard of tensioned screens, but I don't think I've seen them tenderized! Does it make the screen juicier? Can you buy regular screen material and DIY tenderize yourself?
SC |
Haha...I quit eating meat about 6 weeks ago...Guess it's still on my mind.
Mike
_________________
Doing HD since the last century!
|
|
| Back to top |
|
|
|
|
