Banding? at DVinfo.net

Go Back   DV Info Net > Sony XAVC / XDCAM / NXCAM / AVCHD / HDV / DV Camera Systems > Sony XDCAM EX Pro Handhelds

Sony XDCAM EX Pro Handhelds
Sony PMW-300, PXW-X200, PXW-X180 (back to EX3 & EX1) recording to SxS flash memory.


Reply
 
Thread Tools Search this Thread
Old February 1st, 2008, 07:25 PM   #1
Regular Crew
 
Join Date: Nov 2005
Location: Oak Ridge, TN
Posts: 72
Banding?

I got my EX1 yesterday and took it out for a spin today. I shot some time-lapse footage of clouds against a church steeple. When I got the SxS card out and viewed the footage in the computer, the two time-lapse shots showed significant banding.

The photo attached was produced by importing the clip into Apple Color, but it is an accurate representation of the clip as viewed through FCP and Quicktime. The clip was shot at 720P24, 35 VBR.

Has anyone else encountered this? Is this banding found on all clips, or is this an artifact of the high-or-low speed recording?
Attached Thumbnails
Banding?-church_banding.jpg  
Steven D. Martin is offline   Reply With Quote
Old February 1st, 2008, 07:26 PM   #2
Major Player
 
Join Date: Nov 2007
Location: Los Angeles, CA
Posts: 498
I think it was found to be an issue with time lapse - there's another thread discussing it.
Eric Pascarelli is offline   Reply With Quote
Old February 1st, 2008, 07:43 PM   #3
Major Player
 
Join Date: Mar 2007
Location: Norfolk, UK
Posts: 627
Yes, I saw this problem too using 1 fps with S&Q Motion. Try using the Frame Record function instead, it produces better results at 1 fps.
__________________
Blog: www.pauljoy.com
Company: www.videotrader.co.uk
Paul Joy is offline   Reply With Quote
Old February 1st, 2008, 08:58 PM   #4
Major Player
 
Join Date: Sep 2007
Location: Palm Desert, California
Posts: 311
Having got this great camera there really is absolutely no point whatsoever to shoot 720p nor 24p unless you are printing to film. Try again with 1080x30p. Also choose the right gamma - one that compresses rather than splits to highlights. I have not tried this yet but the examples I've seen of speeded up clouds have been fantastic.
Michael H. Stevens is offline   Reply With Quote
Old February 2nd, 2008, 07:21 AM   #5
Inner Circle
 
Join Date: Dec 2005
Location: Rhode Island
Posts: 3,871
Steven I have had this problem when there is not enough light. With proper exposure it seems to work great.

Michael I agree I use 1080P while shooting time laps and 720p 30/60 for slow motion.
__________________
Paul Cronin
www.paulcroninstudios.com

Last edited by Paul Cronin; February 2nd, 2008 at 10:12 AM. Reason: correction on timelaps
Paul Cronin is offline   Reply With Quote
Old February 2nd, 2008, 12:22 PM   #6
Major Player
 
Join Date: Mar 2007
Location: Norfolk, UK
Posts: 627
Quote:
Originally Posted by Michael H. Stevens View Post
Having got this great camera there really is absolutely no point whatsoever to shoot 720p nor 24p unless you are printing to film. Try again with 1080x30p. Also choose the right gamma - one that compresses rather than splits to highlights. I have not tried this yet but the examples I've seen of speeded up clouds have been fantastic.
I disagree, I prefer to shoot at 720p as it allows me to use overcranking without having to change modes. My output does not need to be 1080p so I do not need the extra resolution.

I also don't think this problem has anything to do with gamma settings, it happens at 1 fps but not 5, so something else is happening here.
__________________
Blog: www.pauljoy.com
Company: www.videotrader.co.uk
Paul Joy is offline   Reply With Quote
Old February 2nd, 2008, 12:58 PM   #7
Regular Crew
 
Join Date: Nov 2005
Location: Oak Ridge, TN
Posts: 72
Quote:
Originally Posted by Paul Joy View Post
I disagree, I prefer to shoot at 720p as it allows me to use overcranking without having to change modes. My output does not need to be 1080p so I do not need the extra resolution.
I's gonna say-

The reason I was shooting at 720P was 'cuz I could easily overcrank it. I bought the EX1 because of the native 1080P but am finding that the other advantages of the camera are so amazing that I'm getting my money's worth at 720P!

I'm at the beginning of the experimentation stage with this camera and have a long way to go before I find the right look. But- it's disconcerting to discover that one of the coolest things about the camera produces such horrible artifacts.

Am I hearing that the banding disappears at slightly higher frame rates?
Steven D. Martin 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...

Professional Video
(800) 833-4801
Portland, OR

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

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

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 > Sony XAVC / XDCAM / NXCAM / AVCHD / HDV / DV Camera Systems > Sony XDCAM EX Pro Handhelds

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 04:38 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network