Hi, I'm working as a HD Technitian in a HD feature film in wich we're using a couple of viper filmstream cameras. As they feed a sort of Log curve the image is flat and greenish. We've been correcting the monitoring image by applying LUTs and would like to hear some opinions about exposure. Eventhough we know where our grey, black and white points are supposed to be (around 40, 10 and 70 IRE) the DP is using almost always the whole range the camera can take, which in some cases, reach the 109 IRE for specular highlights or 100 for bright whites (white backlights or white clothes). I'm used to check the raw footage by grabbing some frames using a cinetal monitor or checking out the footage, just to see if we've clipped any light. By adjusting the frames with photoshop I can see roughtly how the colour correction will apply to the image and because of that I'm confident about using the whole sensor range because it's easy to control highlights and so.
I was trained to try to expose images technically, using the waveform as a basic tool, but shot my last jobs with some DPs that like to expose the way they want the image to be at final point, rejecting the safety room I would recomend as a technitian)
My concern is about the final broadcast image: I know that the DP us exposing like we would do with a negative stock, but I'm not quite sure about how this increased latitude will output in TV, basically I'm concerned about the possibility of loosing too much detail in highlights (we're exposing until 109 IRE)
Would like to know opinions about if it would be better to expose using the Input-output levels recommendations (setting the grey point at 40IRE and the skin tones at 50-60IRE, which would feed an underexposed looking image) or if to expose by eye and then trusting colour correction...
I know this post can seem a little basic but I've heard so many opinions about that that I'm not sure about the best reasons to use one or another method.
I was trained to try to expose images technically, using the waveform as a basic tool, but shot my last jobs with some DPs that like to expose the way they want the image to be at final point, rejecting the safety room I would recomend as a technitian)
My concern is about the final broadcast image: I know that the DP us exposing like we would do with a negative stock, but I'm not quite sure about how this increased latitude will output in TV, basically I'm concerned about the possibility of loosing too much detail in highlights (we're exposing until 109 IRE)
Would like to know opinions about if it would be better to expose using the Input-output levels recommendations (setting the grey point at 40IRE and the skin tones at 50-60IRE, which would feed an underexposed looking image) or if to expose by eye and then trusting colour correction...
I know this post can seem a little basic but I've heard so many opinions about that that I'm not sure about the best reasons to use one or another method.