Is lumen measure logarithmic ? + Response time of DILA - AVS Forum
Forum Jump: 
 
Thread Tools
post #1 of 4 Old 04-30-2001, 02:45 PM - Thread Starter
AVS Special Member
 
David Mendicino's Avatar
 
Join Date: Oct 2000
Posts: 1,195
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Hey everyone!

Just two questions to ask:

First, is lumen rating on a logarithmic scale? I only ask this because I was sitting in my theatre, with a 600 lumen projector on a 120" matte white screen, with ambient light on it, enough to wash out the blacks. However, the rest of the colours were still pretty bright! So, I am amazed to consider what a 1000 or even 2000 lumen projector would look like in terms of brightness. Wouldn't this be way too bright in a dark room?

Second question:
What is the response time of the DILA panel, I know LCD is something like 100-200 ms, right? Please correct me if I am wrong. On that note, what is DLP respone time?

Thanks

------------------
David Mendicino
Sharp xv-s55u (Don't laugh) :)

David Mendicino
David Mendicino is offline  
Sponsored Links
Advertisement
 
post #2 of 4 Old 04-30-2001, 02:59 PM
AVS Special Member
 
JoeFloyd's Avatar
 
Join Date: Apr 2000
Location: Fairfax, VA, USA
Posts: 1,384
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Here is good reference that does an excellent job of explaining exactly what is a lumen.

http://www.tfwm.com/twm/articles/video/0300_Barlow.html
JoeFloyd is offline  
post #3 of 4 Old 04-30-2001, 06:07 PM
Senior Member
 
Thumper's Avatar
 
Join Date: Jul 2000
Location: Maryland, USA
Posts: 397
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
David,

Response time for most LCDs is in the 16 milliseconds or so range. DMD full switch rate is 14 microseconds with an effective rate of 2 microseconds.

Thumper
Thumper is offline  
post #4 of 4 Old 04-30-2001, 06:49 PM - Thread Starter
AVS Special Member
 
David Mendicino's Avatar
 
Join Date: Oct 2000
Posts: 1,195
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Thanks for the info guys!

------------------
David Mendicino
Sharp xv-s55u (Don't laugh) :)

David Mendicino
David Mendicino is offline  
Closed Thread Digital Hi-End Projectors - $3,000+ USD MSRP



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