Ultra Short Throw Projection - AVS Forum
Forum Jump: 
Thread Tools
post #1 of 6 Old 12-18-2014, 08:24 PM - Thread Starter
AVS Special Member
 
taichi4's Avatar
 
Join Date: Dec 2007
Posts: 2,423
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 151 Post(s)
Liked: 94
Ultra Short Throw Projection

This may not be the right forum to post this in, but does anyone know of a 17,000 to 18,000 lumen projector-ultra short throw lens combination... something capable of filling a 60 foot wide 30 foot high screen from a very close distance?
taichi4 is offline  
Sponsored Links
Advertisement
 
post #2 of 6 Old 12-18-2014, 11:41 PM
Member
 
MovieTime's Avatar
 
Join Date: Oct 2006
Location: Corona, CA
Posts: 47
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Liked: 10
Define "ultra" short throw. Go to digitalprojection.com and you'll see a number of projectors that fit your bill in lumens output. Most of them have fixed lens short throw options, somewhere between .6-.8. That's pretty darn short, but not like the new Sony that goes right underneath the screen. Others like Christie probably have something like that too.

Keep in mind it becomes much harder to get a sharp, high quality picture and even focus across your screen with a throw that short. You end up with a rounded lens to achieve throws that short others may chime in here with something specialty at that brightness I'm not aware of.
MovieTime is offline  
post #3 of 6 Old 12-19-2014, 05:12 PM - Thread Starter
AVS Special Member
 
taichi4's Avatar
 
Join Date: Dec 2007
Posts: 2,423
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 151 Post(s)
Liked: 94
Quote:
Originally Posted by MovieTime View Post
...Most of them have fixed lens short throw options, somewhere between .6-.8.
With .6-.8, do you feel that sharp, high quality picture and even focus suffers, or were you referring to the Sony, which is more extreme?
taichi4 is offline  
post #4 of 6 Old 12-19-2014, 05:37 PM
AVS Addicted Member
 
CINERAMAX's Avatar
 
Join Date: Sep 2000
Location: Pining for the Taiga
Posts: 12,835
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 276 Post(s)
Liked: 87
Quote:
Originally Posted by taichi4 View Post
With .6-.8, do you feel that sharp, high quality picture and even focus suffers, or were you referring to the Sony, which is more extreme?
There is no sharper picture than a fixed short throw lens, period.

But what you are repeatedly failing to disclose is your throw distance in feet.
CINERAMAX is online now  
post #5 of 6 Old 12-19-2014, 05:59 PM - Thread Starter
AVS Special Member
 
taichi4's Avatar
 
Join Date: Dec 2007
Posts: 2,423
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 151 Post(s)
Liked: 94
Quote:
Originally Posted by CINERAMAX View Post
There is no sharper picture than a fixed short throw lens, period.

But what you are repeatedly failing to disclose is your throw distance in feet.
I am not failing to disclose anything. This is for a story which I need to have grounded in fact. The throw distance needs to be as short as possible, but is not a determined distance. The screen can be from 50-60 feet wide, and 30 feet high.

Frankly, I was a bit confused by your initial comment regarding clarity. It appeared that you were saying that either short throw at .6-.8 OR Sony's extreme short throw compromised picture quality. I didn't know that you were apparently speaking of a variable lens vs a fixed lens.
taichi4 is offline  
post #6 of 6 Unread Today, 07:31 PM
AVS Addicted Member
 
CINERAMAX's Avatar
 
Join Date: Sep 2000
Location: Pining for the Taiga
Posts: 12,835
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 276 Post(s)
Liked: 87
Unless they are Schneider Cinelux or better I would stay at 1 to 1

To minimize pincushion Toroidal geometric distortion I would recommend that you stick to 1 to 1 like in my old RealD 4D labs' 17 feet wide image thrown from 17 feet back..


YOU cannot imagine the MTF (detailed resolution in mid to high frequencies) of this setup. As I said I seldom use the zoom lenses since.

Here is info on schneider
CINERAMAX is online now  
Reply Ultra Hi-End HT Gear ($20,000+)

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off