The key to good noise reduction is temporal + spacial. Temporal is better at noise reduction without obvious loss of resolution. I find just the temporal NR in Resolve makes the hassle of Resolve worth the effort - without even considering the other things you get.
The trick is that you've got to render and observe - 'smart render' is great for this, in the case of Resolve. (And if you have a really good graphics card you should be able to loop it in real time as you tweak) Another useful tip is watching the vector scope while adjusting thresholds. On a still frame, It's surprisingly easy to see the effect of noise reduction on color while observing a good vector scope.
I have not tried isolating the blue channel, because i haven't really needed to… although, er, I could probably tell you how to do that in, sorry, Resolve… ;-)
gh
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Greg Huson
Chief
Secret Headquarters, Inc
Production / Post Production
Culver City, CA
323 677 2092
www.SecretHQ.com
t @SecretHQinc
> On Mar 11, 2018, at 1:34 PM, John Moore bigfish@pacbell.net [Avid-L2] <Avid-L2@yahoogroups.com> wrote:
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> Having not grown up in Davinci land etc... my use of noise reduction has been very limited. I like Neat video which I've used a few times and it does it's magic I just don't really understand exactly what it is doing.
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> I have some under exposed Sony F7 4096x2160 footage. Bringing up the shadows gets a tolerable level but there is resulting noise. BCC 8, which I have on the work system, has noise reduction effect. I've dabbled with it a few times in the past with some success but I always find it a challenge dealing with noise reduction because I can't really dial it in playing back in real time. I assume back in the big Iron days you could play the material and adjust noise reduction during playback. For me looking at a still frame makes the process tough to gauge. Are there any tricks in this area?
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> Is there a method in the BCC 8, maybe pixel chooser or something else, that would allow me to isolate the blue channel only for noise reduction? I always feel there is a lot of power in BCC with pixel chooser etc... that I don't take much advantage of. Anybody got suggestions how to isolate a particular channel for noise reduction. I recall sapphire has an effect that breaks things out in a compositing type mode and BCC8 allows multi filters. Would BCC 8 multifilters provide a means to isolate the blue channel only for noise reduction? I am under the impression that's pretty common in Resolve although I've only heard this from other facilities we've used in the past for problem footage. I'm trying to keep my solution Avid based rather than moving to another app for color correction. Any suggestions would be appreciated.
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> John Moore Barking Trout Productions Studio City, CA bigfish@pacbell.net
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Posted by: Greg Huson <greg@secrethq.com>
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