I haven't jumped onto Ver. 7 and above yet. I'm waiting to finish a current series. My googled understanding of LogC and other log shooting is to center the exposure/level around the center of the overall energy of the light. I read the 14% grey, or whatever the proper units are, is the 50% energy point so LogC centers around that and keeps the exposure away from the bottom and top where the sensors are less accurate, not sure if that would mean less linear given things are exponential in LogC. Now when I get this into Avid it's washed out and I have to lower the blacks and raise the gain and noodle around to my liking. This is what the LUT would do ahead of time if I was on V7 and above. When I find myself adding 175 and more to the gain I start to wonder if using that much gain is adding noise. If it were a regular shot and that dark and I had to add gain it would most definitely add noise so is adding gain to a LogC shot any different? Electronically I don't see how it could be. Also the noodling around I assume is to approximate the "S" curve of the LUT which is a bit of an in exacting science. I would assume with the proper test charts it could be more analytical but I'm doing it by eye and waveform.
Bottom line is if I have to lower the setup and add this much gain has the image really been improved by LogC? I'm sure it is given the adoption but I'm trying to understand the nuts and bolts better in my head.
John Moore
Barking Trout Productions
Studio City, CA
bigfish@pacbell.net
Barking Trout Productions
Studio City, CA
bigfish@pacbell.net
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Posted by: John Moore <bigfish@pacbell.net>
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