Grid Pattern from light screens at DVinfo.net

Go Back   DV Info Net > The Tools of DV and HD Production > Photon Management

Photon Management
Shine an ever-loving light on you.


Reply
 
Thread Tools Search this Thread
Old November 14th, 2009, 10:39 AM   #1
Major Player
 
Join Date: Jul 2005
Location: Denton, TX
Posts: 334
Grid Pattern from light screens

I just got a couple Lowel Omnis & a Tota. The light "instructions" indicate that the protective screen should be used in case of lamp shattering. The screen throws a grid pattern, of course. When using the lights without a diffuser or gel, does anybody actually use the protective screens?

Thanks,
Matt
Matt Vanecek is offline   Reply With Quote
Old November 14th, 2009, 10:45 AM   #2
Inner Circle
 
Join Date: Nov 2006
Location: Tallahassee, FL
Posts: 4,100
Of COURSE use the protective screens! How close are you using the light to a surface to see the grid pattern? I've never seen it on anything I've ever lit.
__________________
DVX100, PMW-EX1, Canon 550D, FigRig, Dell Octocore, Avid MC4/5, MB Looks, RedCineX, Matrox MX02 mini, GTech RAID, Edirol R-4, Senn. G2 Evo, Countryman, Moles and Lowels.
Perrone Ford is offline   Reply With Quote
Old November 14th, 2009, 11:05 AM   #3
Major Player
 
Join Date: Jul 2005
Location: Denton, TX
Posts: 334
20 - 30 ft, can see the pattern on the wall. Doing some testing to get familiar with the lights.

Thanks,
Matt
Matt Vanecek is offline   Reply With Quote
Old November 14th, 2009, 11:20 AM   #4
Inner Circle
 
Join Date: Nov 2006
Location: Tallahassee, FL
Posts: 4,100
Whoa.. really? Maybe it's because I seldom use the lights bare. But that seems very odd. I may set up one of my lights here and have a look.
__________________
DVX100, PMW-EX1, Canon 550D, FigRig, Dell Octocore, Avid MC4/5, MB Looks, RedCineX, Matrox MX02 mini, GTech RAID, Edirol R-4, Senn. G2 Evo, Countryman, Moles and Lowels.
Perrone Ford is offline   Reply With Quote
Old November 14th, 2009, 11:23 AM   #5
Major Player
 
Join Date: Jul 2005
Location: Denton, TX
Posts: 334
It's not noticeable on skin, as far as I can see. Not sure how it looks in post--just looking through the LCD on camera. You can defniitely see the grid pattern when eyeballing it. I'll just have to play with the light's focus and some test shots to see if it's really noticeable. If others don't have a problem with it in camera, then I can go by their collective experiences. It just really surprised me when I first turned on the lights and saw a grid pattern on the wall (why I was surprised, I don't know--there *is* a bunch of light-blocking things in front of the lamp--no matter how skinny they are).

Thanks,
Matt
Matt Vanecek is offline   Reply With Quote
Old November 14th, 2009, 11:44 AM   #6
Regular Crew
 
Join Date: May 2006
Location: Daegu, Korea
Posts: 180
Always, always use the protective screens. We broke bulbs in video school surprisingly often. I don't remember seeing any grid patterns on anything I lit then either, walls included.
Daniel Bates is offline   Reply With Quote
Old November 14th, 2009, 12:54 PM   #7
Inner Circle
 
Join Date: Nov 2006
Location: Tallahassee, FL
Posts: 4,100
So I did a little experiment. I pulled out a Lowel DP light with the screen, put it on a c-stand, taped a clean piece of printer paper to a wall, and turned the light on it. Distance was about 5 feet.

Pics below show the light hitting the paper, and the setup. Sorry for the crappy quality, but all I have is my iPhone handy.
Attached Thumbnails
Grid Pattern from light screens-img_0284.jpg   Grid Pattern from light screens-img_0285.jpg  

Grid Pattern from light screens-img_0286.jpg  
__________________
DVX100, PMW-EX1, Canon 550D, FigRig, Dell Octocore, Avid MC4/5, MB Looks, RedCineX, Matrox MX02 mini, GTech RAID, Edirol R-4, Senn. G2 Evo, Countryman, Moles and Lowels.
Perrone Ford is offline   Reply With Quote
Old November 15th, 2009, 08:11 AM   #8
Major Player
 
Join Date: Jul 2005
Location: Denton, TX
Posts: 334
Seems to be just that one light--the other two were pretty smooth. *shrug*. Dunno--long as it lights the video well, is all that matters, I guess...

Thanks,
Matt
Matt Vanecek 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 > The Tools of DV and HD Production > Photon Management

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 01:05 PM.


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