Exposure latitude?

B

brifast

New member
Ok I am shooting a feature now that requires mixed moody lighting. I have been watching the dailies for the first couple of days with a critical eye. I think some of the variances are troubling from normal exposure to underexposure. What is my range or point of no return where post can’t even out the shot to shot timing? I have heard 2-4 stops under?

Brian Fass
brifast@aol.com :-/
 
Re: Exposure latitude?

Just adding gain in post won't solve severe mismatches...the "fixed" shots won't have the same dynamic range as the normal ones, so your in for a lot of color and level corrections. Generally 1 stop to 1 1/2 stops under is fixable without 'much" difference.
In the "olden days" of video (tube cameras), the rule was to light the shadows to maintain some detail and then drop them in post for the desired effect. If no shadow detail exists, you are only brightening mushy noise in post.
You might want to shoot a quick test in your mood lighting setup with various gamma seetings to see which one looks best under your specific conditions.
Hope this helps.
Ken
 
Re: Exposure latitude?

In my previous post I was referring to overall scene underexposure correction.
As you can see in the ASC comparison example, you have no real detail in the 4 stop under shadows with the 100. If your low key "moody" shot contained a lot of darkness per frame, you'd have to add some fill there or open up your aperture and adjust the key exposure to maintain decent, low noise shadow detail with enough contrast. I find that with my 100a, I can let the highlights go a stop over safely and still maintain enough texture in them.
Hope this helps.
Ken
 
Re: Exposure latitude?

Hello

What was the gamma setting in the photos from AC? Doesn't the gamma setting affect the camera's latitude?

Raoul
 
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