shooting 24p or 30p without stutter problem at DVinfo.net

Lewis Stiefel · March 3rd, 2009, 09:48 PM

Recently upgraded from the PD-150 to the Panasonic HPX-170. When shooting
in film mode can anyone tell me how I can shoot 24p or 30p and not get stutter
when panning slowly?

TingSern Wong · March 4th, 2009, 10:00 AM

You use at least 1/60 second shutter speed AND you pan VERY VERY SLOWLY. Basically, you have to treat your video camera as a FILM camera if you use progressive scan.

Noa Put · March 4th, 2009, 10:24 AM

25f with my xh-a1 is very unforgiving when doing panning movements, as long as the panning is really slow it's OK. That's why I only do 2 types of camera movements, really slow or very fast to go from point a to b. Otherwise I mainly choose a fixed position.
The stutter is just not possible to prevent, the only reason why i stay with progressive for weddings is that when I switch to 1/25th shutter when it gets too dark you hardly notice it. 1/25th shutter also created some kind of stutter but is less noticeable in 25f when going from 1/50 to 1/25 compared to filming in 50i

Bo Skelmose · March 4th, 2009, 11:41 AM

Yes very slow pans - Filmmakers say that only Clint Eastwood can pan with his eyes when he enters a western bar. All others blink/clip with their eyes. Try yourself to pan your view. If you pan - follow some moving object so the viewer dont focus on the stuttering background. Guess that is why "the lone rider" always is riding towards a farm in a very big shot.
...........Bo

Dan Brockett · March 5th, 2009, 08:45 PM

If you want to invest in the ASC Cinematographer's Manual, it actual has all of the panning times listed at all of the different focal lengths to obtain smooth, stutter free pans. You would be amazed at how slow the rates are, especially on longer focal lengths.

As the others have alluded to, if you are panning with a central object in the composition, the eye will tend to follow the object that is most stationary in the frame, ignoring much of the stuttering.

Dan

Barry Green · March 6th, 2009, 08:13 AM

Lewis, if you got The HVX & HPX Book in the box with your HPX170, you'll find a chapter on controlling strobing in there, and it includes a chart comparable to the one in the ASC manual (but modified for the zoom settings of the HVX/HPX).

Dan Brockett · March 6th, 2009, 09:14 AM

Cool Barry, I forgot about your chart. Yes, much more applicable to HVX/HPX users.

Dan

March 3rd, 2009, 09:48 PM	#1
Lewis Stiefel Tourist Join Date: Mar 2009 Location: New York Posts: 1	shooting 24p or 30p without stutter problem Recently upgraded from the PD-150 to the Panasonic HPX-170. When shooting in film mode can anyone tell me how I can shoot 24p or 30p and not get stutter when panning slowly?

March 4th, 2009, 10:24 AM	#3
Noa Put Inner Circle Join Date: Jun 2007 Location: Belgium Posts: 9,510	25f with my xh-a1 is very unforgiving when doing panning movements, as long as the panning is really slow it's OK. That's why I only do 2 types of camera movements, really slow or very fast to go from point a to b. Otherwise I mainly choose a fixed position. The stutter is just not possible to prevent, the only reason why i stay with progressive for weddings is that when I switch to 1/25th shutter when it gets too dark you hardly notice it. 1/25th shutter also created some kind of stutter but is less noticeable in 25f when going from 1/50 to 1/25 compared to filming in 50i Last edited by Noa Put; March 4th, 2009 at 11:59 AM.

March 4th, 2009, 10:00 AM	#2
TingSern Wong Major Player Join Date: Jan 2004 Location: Singapore, Rep of SINGAPORE Posts: 749	You use at least 1/60 second shutter speed AND you pan VERY VERY SLOWLY. Basically, you have to treat your video camera as a FILM camera if you use progressive scan.

March 4th, 2009, 11:41 AM	#4
Bo Skelmose Major Player Join Date: Apr 2008 Location: Denmark Posts: 495	Yes very slow pans - Filmmakers say that only Clint Eastwood can pan with his eyes when he enters a western bar. All others blink/clip with their eyes. Try yourself to pan your view. If you pan - follow some moving object so the viewer dont focus on the stuttering background. Guess that is why "the lone rider" always is riding towards a farm in a very big shot. ...........Bo

March 5th, 2009, 08:45 PM	#5
Dan Brockett Inner Circle Join Date: Feb 2006 Location: Los Angeles, California Posts: 2,109	If you want to invest in the ASC Cinematographer's Manual, it actual has all of the panning times listed at all of the different focal lengths to obtain smooth, stutter free pans. You would be amazed at how slow the rates are, especially on longer focal lengths. As the others have alluded to, if you are panning with a central object in the composition, the eye will tend to follow the object that is most stationary in the frame, ignoring much of the stuttering. Dan

March 6th, 2009, 08:13 AM	#6
Barry Green Barry Wan Kenobi Join Date: Jul 2003 Location: North Carolina Posts: 3,863	Lewis, if you got The HVX & HPX Book in the box with your HPX170, you'll find a chapter on controlling strobing in there, and it includes a chart comparable to the one in the ASC manual (but modified for the zoom settings of the HVX/HPX).

March 6th, 2009, 09:14 AM	#7
Dan Brockett Inner Circle Join Date: Feb 2006 Location: Los Angeles, California Posts: 2,109	Cool Barry, I forgot about your chart. Yes, much more applicable to HVX/HPX users. Dan