Pan Jitter at DVinfo.net

Go Back   DV Info Net > Panasonic P2HD / AVCCAM / AVCHD / DV Camera Systems > Panasonic DVX / DVC Assistant

Panasonic DVX / DVC Assistant
The 4K DVX200 plus previous Panasonic Pro Line cams: DVX100A, DVC60, DVC30.


Reply
 
Thread Tools Search this Thread
Old July 29th, 2003, 05:17 PM   #1
Tourist
 
Join Date: Jul 2003
Posts: 2
Pan Jitter

Has anyone heard of image jitter in the PAL model?
A friend was trying out the camera recently and said there was pan jitter.

Thanks
Geoffrey
Geoffrey Mee is offline   Reply With Quote
Old July 29th, 2003, 06:37 PM   #2
Major Player
 
Join Date: May 2003
Location: Chicago, IL
Posts: 991
yes, they all jitter, which is natural
Yang Wen is offline   Reply With Quote
Old July 29th, 2003, 08:16 PM   #3
Barry Wan Kenobi
 
Join Date: Jul 2003
Location: North Carolina
Posts: 3,863
When using a slower frame rate (i.e., 24, 25, or 30 fps) you have to pan slower. That's the rule.

I adapted the American Cinematographer's Manual's acceptable panning rates to the DVX100's focal lengths. You'd be surprised how slow you have to pan, if you want the image to look glass-smooth.

The short rule of thumb is, it should take about 8 seconds for an object to cross the screen during a pan. Pans should be slow enough that the motion looks smooth on the camera's LCD.

The long, laborious table is as follows: to execute a 90-degree sweep, at the following focal lengths, at 24P or 30P frame rates, should take the following amount of seconds in order to look smooth:

FOCAL LENGTH / 24P PAN SPEED / 30P PAN SPEED
4.5mm / 15 seconds / 11 seconds
6mm / 18 seconds / 14 seconds
7mm / 21 seconds / 16 seconds
8mm / 23 seconds / 20 seconds
12mm / 36 seconds / 27 seconds
14mm / 50 seconds / 38 seconds
16.5mm / 60 seconds / 45 seconds
25mm / 80 seconds / 60 seconds
30mm / 90 seconds / 75 seconds
45mm / 120 seconds / 120 seconds
Barry Green is offline   Reply With Quote
Old July 29th, 2003, 09:57 PM   #4
Space Hipster
 
Join Date: Oct 2001
Location: Greensboro, NC
Posts: 1,508
Great info Barry - thanks for the post. I've just being using my eyes in the LCD which is better than looking through a tiny Super8 or 16 viewfinder... :)

Your spot on about the 8 seconds - that's been my experience as well.

BTW. No Panny anamorphic for me. I'm going to wait for the CO. I don't have a project that will need the extra res in the next few months...
__________________
stephen v2
www.insaturnsrings.com
Stephen van Vuuren is offline   Reply With Quote
Old August 2nd, 2003, 09:02 PM   #5
DVX User
 
Join Date: May 2003
Location: Vancouver
Posts: 281
BTW, the jitter you see on the LCD is not what is recorded to tape, the frame rate on the LCD is half the frame rate of normal speed as to free up processing power.
Jarred Land is offline   Reply With Quote
Old August 2nd, 2003, 09:04 PM   #6
Space Hipster
 
Join Date: Oct 2001
Location: Greensboro, NC
Posts: 1,508
Jarred:

Interesting - is that 12fps in 24p, 15fps in 30p - what about 60i?
__________________
stephen v2
www.insaturnsrings.com
Stephen van Vuuren is offline   Reply With Quote
Old August 2nd, 2003, 09:08 PM   #7
DVX User
 
Join Date: May 2003
Location: Vancouver
Posts: 281
sorry... no need for the reduction in interlaced modes. More than enough power in 60i.

That is why the autofocus has been disabled as well in 24p and 30p modes.
Jarred Land 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 > Panasonic P2HD / AVCCAM / AVCHD / DV Camera Systems > Panasonic DVX / DVC Assistant

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 01:13 AM.


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