Interesting read on 2K, 4K - AVS Forum
Forum Jump: 
 
Thread Tools
post #1 of 6 Old 06-01-2012, 05:44 AM - Thread Starter
AVS Club Gold
 
Dennis Erskine's Avatar
 
Join Date: Jul 1999
Location: Near an airport
Posts: 9,143
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 17 Post(s)
Liked: 46
Many of you will have your arms around this already; but, for those jumping into the 4K world, this is a worthwhile read.

http://magazine.creativecow.net/arti...ture-of-pixels


Also, "Home Theater Video Design" best practices document (CEA/CEDIA-DEB23-A) is now available at www.CE.org

Dennis Erskine CFI, CFII, MEI
Architectural Acoustics
Subject Matter Expert
Certified Home Theater Designer
CEDIA Board of Directors
www.erskine-group.com
www.CinemaForte.net
Dennis Erskine is offline  
Sponsored Links
Advertisement
 
post #2 of 6 Old 06-01-2012, 09:49 AM
AVS Special Member
 
Andrikos's Avatar
 
Join Date: Apr 2003
Location: Stuttgart
Posts: 3,911
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 12
Great read!
Even though it's 3 years old it's amazing how relevant all the info still is.
Who knew that a 4k print was actually a 38MP picture!

Next projector will have LEDs, >=1080 res, >=10 bit color, >14bit CR, >9 bit ANSI CR, >=120Hz, >16ft.L on 12ft 2.35:1 screen, <$12bit price

My 1st line array design

My ongoing Line Array Design
Andrikos is offline  
post #3 of 6 Old 06-01-2012, 11:17 AM
AVS Addicted Member
 
noah katz's Avatar
 
Join Date: Apr 1999
Location: Mountain View, CA USA
Posts: 20,732
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 367 Post(s)
Liked: 180
I started to read but stopped; does counting as 3 pixels the R/G/B subpixels needed to make one "real" pixel have any relevance these days?

I don't see any of the mfgr's of 3-chip displays tripling their res spec's like some of them used to back n the day.

Noah
noah katz is offline  
post #4 of 6 Old 06-03-2012, 05:00 PM
AVS Special Member
 
Joelc's Avatar
 
Join Date: Apr 2001
Location: Toronto, Ontario, Canada
Posts: 2,067
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Dennis, thanks for the article, enjoyed reading it...

Dennis or others, being less technical than some here let me see whether or not I can summarize some of the key points:

1. 4K with a lower frame rate will produce a softer image than 2K with higher frame rates...in other words, we would be better off focusing on higher frame rates over a higher pixel count.

2. 4K (with a given frame rate) will not generate a noticeable better image than 2K (with the same frame rate) unless one sits closer which, the author argues, likely is not going to happen.

3. 4K (with a given frame rate) will not generate a noticeable better image than 2K (with the same frame) even were one to sit closer unless the lens and other components are up to the task.

The point being that one needs to think through much more simply the pixel density before considering a change.

With that the follow up items I am interested in are:

1. Is my understanding correct?

2. How does one determine whether the move from 2K to 4K is warranted based on the other components because unlike Panavision, there is little opportunity to do a side by side comparison or, better yet, even rent projectors for evaluation.

TIA...

Joel
Some people choose to have a pool, I choose to have a home theater!
Joelc is offline  
post #5 of 6 Old 06-03-2012, 06:40 PM
AVS Club Gold
 
Art Sonneborn's Avatar
 
Join Date: Jun 2000
Location: Battle Creek,MI USA
Posts: 22,307
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 13 Post(s)
Liked: 49
If you sit at or near the SMPTE minimum viewing distance pixels are visible at focused 2K . This may not be where you sit or something you care about but fact none the less.

Art

My HT


iRule rules my theater
 

"If she's amazing she won't be easy,if she's easy she won't be amazing"

 

Bob Marley

Art Sonneborn is offline  
post #6 of 6 Old 06-04-2012, 02:04 AM
AVS Special Member
 
Andrikos's Avatar
 
Join Date: Apr 2003
Location: Stuttgart
Posts: 3,911
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 12
I think that regarding optimal resolution we still have a long way to go, but that also applies to color-depth, DR and CR of projectors.
I'm sure in 10 years we'll look back and smirk at the "primitive projectors" of the 2010s.

Next projector will have LEDs, >=1080 res, >=10 bit color, >14bit CR, >9 bit ANSI CR, >=120Hz, >16ft.L on 12ft 2.35:1 screen, <$12bit price

My 1st line array design

My ongoing Line Array Design
Andrikos is offline  
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