Newbie Question Regarding 1080i to 720p. - Page 2 at DVinfo.net
DV Info Net

Go Back   DV Info Net > High Definition Video Acquisition > General HD (720 / 1080) Acquisition

General HD (720 / 1080) Acquisition
Topics about HD production.

Reply
 
Thread Tools Search this Thread
Old November 19th, 2009, 05:25 PM   #16
Inner Circle
 
Join Date: Sep 2002
Location: Vancouver, British Columbia (formerly Winnipeg, Manitoba) Canada
Posts: 4,088
Quote:
Originally Posted by David Heath View Post
In reality it's more complicated than you infer, owing to the necessity to avoid interline twitter. Scanning a chip for interlace means that lines have to be summed, but differently for different fields. Hence the lines of an even field may formed from chip lines 1+2, 3+4, 5+6 etc, the lines of an odd field from 2+3, 4+5, 6+7 etc. This reduces twitter, but also reduces vertical resolution compared to progressive scanning.
Agreed. It's actually a more accurate question to ask : "how many lines does it resolve?" than "what is the resolution (in common usage, the NUMBER of lines of pixels)?"
__________________
Shaun C. Roemich Road Dog Media - Vancouver, BC - Videographer - Webcaster
www.roaddogmedia.ca Blog: http://roaddogmedia.wordpress.com/
Shaun Roemich is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

B&H Photo Video
(866) 521-7381
New York, NY USA

Scan Computers Int. Ltd.
+44 0871-472-4747
Bolton, Lancashire UK


DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > High Definition Video Acquisition > General HD (720 / 1080) Acquisition

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



All times are GMT -6. The time now is 05:23 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2024 The Digital Video Information Network