After image at DVinfo.net
DV Info Net

Go Back   DV Info Net > Canon EOS / MXF / AVCHD / HDV / DV Camera Systems > Canon HDV and DV Camera Systems > Canon XL and GL Series DV Camcorders

Canon XL and GL Series DV Camcorders
Canon XL2 / XL1S / XL1 and GL2 / XM2 / GL1 / XM1.

Reply
 
Thread Tools Search this Thread
Old September 7th, 2005, 08:19 AM   #1
Regular Crew
 
Join Date: Oct 2004
Posts: 83
After image

I've noticed that 60i ( worse with 24p) ,16x9 -3db, gamma and color cine footage displayed on a large screen ( 50" plasma and 30" HD tube tv's) at times reveals a grainy, pixelated afterimage(ghost like stutter) on certain detailed images (trees, garss, etc) when panning.It stops once the camera stops moving. This happens with vetical detail low or normal. Is this normal?
William LiPera is offline   Reply With Quote
Old September 7th, 2005, 08:50 AM   #2
Major Player
 
Join Date: Jun 2004
Location: McLean, VA United States
Posts: 749
This is normal and very noticeable at 60i if the display is progressive i.e. 30p because two fields taken 1/60th of a second apart are displayed simultaneously. If there is motion and the shutter speed was high enough you will be able to see both images with what looks like a rake hanging off the back end of moving objects. This is the case when video is displayed on computer monitors. With the fancy TV sets it may well be the same but you may have a choice as to scan rate being used. Switch to interlace if possible and the problem should go away with 60i. Otherwize shoot 30p.

With 24p (2:3:3:2 pulldown) the fields sent to the TV are AA BB BC CC DD ... thus you will have the same problem as with 60i but only in 1 frame out of 5. With 2:3 pulldown 1 out of three frames will exhibit this problem. Switching to 60i will eliminate it (though it will still look jerky). Otherwize don't shoot 24p (unless you are transferring to film). If you must, be sure to use 2:3:3:2 pulldown to reduce the effect on a TV set. Low shutter speed makes it less noticeable because the images are blurred.
A. J. deLange 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 > Canon EOS / MXF / AVCHD / HDV / DV Camera Systems > Canon HDV and DV Camera Systems > Canon XL and GL Series DV Camcorders

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



All times are GMT -6. The time now is 05:54 PM.


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