Depth of Field at DVinfo.net

Go Back   DV Info Net > Special Interest Areas > Wedding / Event Videography Techniques

Wedding / Event Videography Techniques
Shooting non-repeatable events: weddings, recitals, plays, performances...


Reply
 
Thread Tools Search this Thread
Old June 26th, 2009, 02:48 PM   #1
Trustee
 
Join Date: May 2004
Location: USA
Posts: 1,551
Depth of Field

I have been told when filming theatrical performances to manually focus on the back of the stage and everything in front of that point on the stage should be in focus. Seems to me focusing in the middle would give me dof to work with. I also ran a dof calculator and it says you have more dof behind the subject than in front. @50ft f/2.2 54mm = 5.5' in front / 7' behind subject.
Pete Cofrancesco is online now   Reply With Quote
Old June 26th, 2009, 03:24 PM   #2
Regular Crew
 
Join Date: Aug 2006
Location: Oshkosh, WI
Posts: 190
Quote:
Originally Posted by Pete Cofrancesco View Post
I have been told when filming theatrical performances to manually focus on the back of the stage and everything in front of that point on the stage should be in focus. Seems to me focusing in the middle would give me dof to work with. I also ran a dof calculator and it says you have more dof behind the subject than in front. @50ft f/2.2 54mm = 5.5' in front / 7' behind subject.
Pete wouldn't that depend on the iris setting? If you are shooting at 2.8 and zoomed in, for instance, you will have a very narrow dof, so the curtain would be in good focus, but everything else even a small distance away would be blurred.

Bruce
Bruce G. Cleveland is offline   Reply With Quote
Old June 26th, 2009, 03:39 PM   #3
Major Player
 
Join Date: Oct 2007
Location: Scotland, Ayr www.amour weddingvideos.co.uk
Posts: 304
I think the rule is 1/3 in front 2/3 behind for DOF
I always set the focus before the start of a show, zooming in on the middle of the stage and setting that as my focus point.
That should cover you except perhaps max zoom in low light when you may need to re focus due to the wide open iris.
__________________
john estcourt
www.amourweddingvideos.co.uk
John Estcourt is offline   Reply With Quote
Old June 26th, 2009, 09:21 PM   #4
Trustee
 
Join Date: May 2004
Location: USA
Posts: 1,551
I used an online DOF calculator to generate numbers I posted, I was surprised it had 1/3" video camera in the choices. I assume most are no deeper than 15-20' so shooting at 2.2 would cover most of that depth (12.5'). When zoomed 2.2 is as wide as she goes.

I just wanted to confirm center, instead of the back. I was always curious about the dof. When I'm at the event its very difficult to see what is in and out of focus with the camera LCD.
Pete Cofrancesco is online now   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 > Special Interest Areas > Wedding / Event Videography Techniques

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 11:24 AM.


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