The Light meter thread at DVinfo.net

Go Back   DV Info Net > Canon EOS / MXF / AVCHD / HDV / DV Camera Systems > Canon EOS Crop Sensor for HD

Canon EOS Crop Sensor for HD
APS-C sensor cameras including the 80D, 70D, 7D Mk. II, 7D, EOS M and Rebel models for HD video recording.


Reply
 
Thread Tools Search this Thread
Old December 6th, 2009, 07:32 PM   #1
Inner Circle
 
Join Date: Jan 2006
Posts: 2,290
The Light meter thread

Until there are zebras, I'm thinking light meters are the way to go. I don't own one and never have. So, where to start? I want something cheap and simple. Not the best, just the basics.
Brian Luce is offline   Reply With Quote
Old December 6th, 2009, 09:31 PM   #2
Inner Circle
 
Join Date: May 2006
Location: Camas, WA, USA
Posts: 5,513
The cheaper option is to expose to a gray card. It won't tell you if your shadows are lit or crushed, or if the windows are blown out, but it can help to ensure that faces are exposed consistently, shot to shot.

You can use a histogram to see if the windows are blown, but getting the shadows critically lit is the toughest problem - and where a light meter could come in handy. Personally, I like a waveform for checking out the shadows.
__________________
Jon Fairhurst
Jon Fairhurst is offline   Reply With Quote
Old December 7th, 2009, 12:43 AM   #3
Regular Crew
 
Join Date: Feb 2009
Location: SF Bay Area, CA, USA
Posts: 78
I also do photography using Pocket Wizards to trigger strobes, so the Sekonic L-358 has served me very well. For videography, I use it to get in the ballpark, but I still use two other tricks to ensure usable exposure on the Canon 7D: I shoot with the popular "superflat" picture style, and I shoot stills with every new setup and with for every significant blocking, to ensure the histogram is happy with the light meter's suggestions. This works for me because I color grade in post and don't mind taking that time. If color grading won't fit in my pipeline, i just follow Stu Maschwitz's "Flatten your 5D" instructions instead of shooting superflat.
__________________
designer of media for eyes and ears
sound design and field recording at http://www.noisejockey.net/blog
Nathan Moody is offline   Reply With Quote
Old December 7th, 2009, 01:22 AM   #4
Inner Circle
 
Join Date: May 2006
Location: Camas, WA, USA
Posts: 5,513
One of the challenges with the 7D and 5D2 is that it applies a strong S-curve, and it's only eight bits. So, if you don't get a good match, you end up throwing precious bits away.

Exposing for a correct histogram (no blown whites or crushed blacks) in RAW photos is a great way to go. You can tweak in post, and in general, nothing needs to match. For video, it's really important to get things in the same range from shot to shot - even if you grade for art's sake later.

We've had great results using Magic Lantern and setting light skinned faces at the 0xb000 zebra level. On the other hand, our first 5D2 short was shot in the snow, the light changed all the time, and that was before the manual exposure settings. We used the histogram method to ensure stuff wasn't blown out, but the cuts matched poorly, and we had to hand tweak aggressively, just to get consistency. We ended up with lots of contours on some shots.

This doesn't matter really for travelogue type shoots, where the scene varies from cut to cut. Histograms are fine then. But for narrative, where you follow one character in one setting, zebras or a gray card are the way to go.
__________________
Jon Fairhurst
Jon Fairhurst is offline   Reply With Quote
Old December 7th, 2009, 03:31 AM   #5
Major Player
 
Join Date: Sep 2006
Location: London, England
Posts: 969
The Sekonic L-758DR is designed specifically for use with digital cameras. Personally, I can get by without one.
__________________
Writer-Director-DOP
www.liamhall.net
Liam Hall 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 > Canon EOS / MXF / AVCHD / HDV / DV Camera Systems > Canon EOS Crop Sensor for HD

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 04:11 PM.


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