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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 17 Nov 2012 (Saturday) 13:24
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Light meter to take sunset sky exposure.

 
bobbyz
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Nov 23, 2012 21:24 |  #31

A shot from last yr. No gel of any kind. Almost straight from camera.

IMAGE: http://www.bobbyzphotography.com/img/s3/v26/p192687855-5.jpg

Settings, ISO125, f2.8, 1/80. 3 stop filter to blur bg. Doesn't this look like 50% or close to it flash to ambient ratio?

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aroundlsu
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Nov 23, 2012 22:24 |  #32

I am not exactly sure what everyone is arguing about but it seems to be about whether to gel or not to gel your key light. I am both a photographer and a color grader. So I see both sides of the problem.

1. Photographers want to produce as balanced of an image as possible on set.
2. Colorists want to receive as neutral and bright an image as possible.

If you are truly a great photographer and can match your gel with your ambient lighting perfectly then go for it. However, from what I have received, only the best of the best photographers can do this. The rest mess it up royally. It's easy for me to add the warmth into your subject that was lit bare with daylight flash against a 3500k sunset. It's hard for me to match the balance of a 1/4 CTO when it should have been a 1/2 CTS (or any combination of).

As a photographer and colorist, I would shoot it neutral (without gels) and fix it in post. Get the levels right and worry about the color later. If in doubt, shoot it bright not dark.


Teddy Smith, SOC
IATSE Local 600 Cinematographer

  
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Wilt
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Nov 24, 2012 20:42 |  #33

Wilt wrote in post #15281380 (external link)
Unfortunately I had a brain f*rt and neglected to set ISO 1600 on the flash, the 45CL was left set on ISO 200, so the bunny was horridly overexposed. I reduced overall exposure in all shots by -1.5EV during postprocessing (putting the sky at -2.5EV compared to what was metered by the camera on Spot), to sort of recover the toy bunny exposure. Exposure 3 looks OK (still hot and overexposed) and the twilight sky is not any less warm compared to the bunny (if I hadn't been in a rush, I should have left more of the orange not obscured by the toy bunny!), Exposure 4 has funny tinges of blue (probably because I blew out a channel). I should simply reshoot tomorrow if the weather cooperates and repost!

OK, time to redeem myself for my brain f*rt yesterday. I reshot, this time remembering to set same ISO on the flash as on the camera...ISO 100. Unfortunately, at 5:45pm there was not a lot of warmth showing in the color of the sky; the sun was close to ducking behind the nearby coastal mountains (not setting, per se), at about 30 degrees to camera right. I set LR to 5600K for WB.
Today I set both EC -1 and FEC -1. Ambient-only lighting is shown in the first shot; the difference between the 40D Spot mode sky exposure 1/125 f/5.6 and the incident ambient light exposure 1/3 sec. f/5.6, was a difference of -5EV. The second shot is with flash in Auto mode with a 1/4 CTO gel, the third shot is with same flash but without any gel.

IMAGE: http://i69.photobucket.com/albums/i63/wiltonw/sunsetflashwarmth.jpg

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Light meter to take sunset sky exposure.
FORUMS General Gear Talk Flash and Studio Lighting 
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x 1600
y 1600

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