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Would you say that it's clean enough at 1600 ISO to intercut seamlessly with 800 ISO?
With the 2-stop jumps in ND filter steps, it'd be nice if the ISO performance is close enough that you could simply go up or down a stop in ISO (when you change NDs) in order to give you 1-stop precision in exposure (so you can keep aperture at the same setting).
I’m not sure what your goals are, so, i wouldn’t recommend it. Changing the iso can match though.
I think Canon iso is baked in, even in raw.
With the Red Gemini, changing iso feels more like changing the personality of the camera. Since the captured exposure between iso800 and iso1600 is the same data, that means iso1600 is just digging into the shadows and moving a stop to the highlights. That is really cool, because now at iso1600, the Gemini starts looking more like the Venice or the Alexa. However, then the 800 looks like that ultra clean RED video look we are accustomed to and many love. The odd thing is, i didn’t feel the same big personality shift in the C500ii. It could have been because the wide dr lut maps in a certain way. Could be that Canon applies gain at each iso stop and some how that keeps the shadow to highlight ratios more consistent? I would have to go back and dig into the raw to know for sure.
As far as getting away with matching iso1600 to iso800, certainly. But match cutting the same shot of the same face, might be a slight shift.
We shot in mostly chronological order, so the shots get progressively noisier and more shallow dof. Will be a big old stress test once edited together.
It was one of those projects i knew i was going to have to fake some day light at the end, and we ended up going farther than i felt comfortable, as i am not very familiar with it. We’ll know in a couple weeks once the director and editor can get to the edit.
I shot a clip of iso6400, and felt that was the limit before i started feeling like had to hold back without more in depth testing. So, 1600-3200 were very much iso’s i’d use frequently, and everything under 3200 felt really clean. Having also just shot on an old C300mk1, i can say they are in different worlds. C500ii is cleaner, and miles ahead of the original C300 in every way. ....i was still kind of impressed with the C300, but it was pretty noisy and the personality changed a lot by iso3200.
