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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

EPIC Noise/Grain

How can I upload the R3D? I' have plenty of light and would never have had this problem with my RED MX. I've shot this same thing dozens of times with no noise from RED ONE.
 
Lee Dashiell said:
How can I upload the R3D? I' have plenty of light and would never have had this problem with my RED MX. I've shot this same thing dozens of times with no noise from RED ONE.
Click to expand...

I would love to see this resolved too - as I am about to shoot a short w/ my Scarlet in the NYC subway.....
 
Lee Dashiell said:
28anr6f.jpg


Just pulled this from the newest Redcine Pro Build 8

Noise is everywhere on the jacket. Mostly all blue channel. His Jacket is dark, but as you can see, there is plenty of light. I shouldn't be having this problem.
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Looking at this jpeg, it looks very underexposed. In Photoshop, the white on the key side of his collar has a brightness value of only 80%. The brightest spot I can find on the flags is only 61%. The only thing that approaches white are the out-of-focus lights out the window at extreme the left of the image. Is it possible that you were getting clipping indications from those and backed off the iris to compensate? (And in doing so underexposed the image?)
 
Save an R3D snaphot of a frame with this button
buttonrcx.jpg


and upload it as an attachment, or mail it to me john at kippertie.com and I'll host it.

Be nice to resolve what this could be :)
 
Lee Dashiell said:
How can I upload the R3D? I' have plenty of light and would never have had this problem with my RED MX. I've shot this same thing dozens of times with no noise from RED ONE.
Click to expand...

In RCX PRO Just export an R3D snapshot.

It's one frame of the r3d file, compress it and upload it.

David

Or DO what John just said to do.

LOL
 
Ok I will do that and post it on the site in the next few minutes. Some people are saying that they did not have this problem with the Red MX. Yea I never had this problem with the MX either. i didn't even have this problem with the Red M !!
 
Been thinking the same. The noise is way lover in Epic then in R1-MX, but the noise it better looking in R1-MX.
 
Too big to upload, even when zipped. I'll be glad to email it if someone wants to take a look. I have started a Support ticket but haven't heard anything yet.
 
My EPIC boots up and records like this every once in a while as well.
 

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Lee would you mind if I post the R3D snapshot you sent me?

I don't want to come off as being mean, but looking at the raw file I can see how it would end up noisy. I'll elaborate if you like, although I'm sure Red support will have an opinion too :)
 
John Marchant said:
Lee would you mind if I post the R3D snapshot you sent me?

I don't want to come off as being mean, but looking at the raw file I can see how it would end up noisy. I'll elaborate if you like, although I'm sure Red support will have an opinion too :)
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HAHA!! I've got pretty thick skin so any suggestion is welcome. What I'm saying is that I've shot in lighting conditions much worse than these with the same glass on RED ONE MX and I've always had an image that I could correct without the noise that I'm getting from EPIC. It just comes as a bit of a surprise.
 
OK Lee, don't want to cause offense - its easily done online :)

Lee's R3D snapshot is at : http://www.kippertie.com/red/leedashiell.zip

My take on it is this. Three main factors - lower than expected resolution, lower than usual colour temperature, low exposure.

First, its a 3k clip. That's about 5mp not 14mp of resolution, so any noise is much chunkier in a 1080p transcode.

Second, the colour temp going by the guy's shirt is around 2200, which makes life hard for the sensor without colour filtration in front of the lens to help you out (assuming sufficient light to do so)

Third, if you check out an approximation of what the sensor is seeing in RCX by rating at 320 ISO rather than 1000, removing the little exposure boost in the metadata too, and placing colour temp at 5k, you'll see that even the brightest points of light aren't illuminating the blue channel more than 33%, the blue level in the white shirt is way down around 15%. The blacks - well lets say as a result they're way down close to the noise floor of the camera, hence all your dancing noise.

I'd say if you had loads of light, then there's been a misunderstanding of the histogram due to camera meta settings. The colour temp evil, and wasn't helping you though, and balancing that in front of the lens would mean your exposure would have been pushed nearer to the sweet spot on the sensor, even with the slightly beyond-safe exposure.

Up side- I'd say with a willingness to beat down the blacks with the shadow slider, some compromise of colour temo to the warm side and some judicious s-curving you will probably hide the issue.

Set RAW check on a friendly button and remember the histogram behaves according to your meta settings at all other times :)
 
Hi Lee,

I have just looked at the R3D and agree with John's analysis.

Lee Dashiell said:
The noise on his jacket dances around like crazy!! Can't deliver this to my client.
Click to expand...

In my view it can be saved in RCX... I have reset all the original metadata and (roughly) tweaked it - once downsampled to HD it should be usable.

I have zipped a snapshot and an RMD with my tweaks.

http://www.flow-mps.com/uploads.html

Hope it helps!

All the best,
 
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I got this, out of that, in about 20 seconds...

No problem with this r3d at all...

Just by using RCX...

A003_C001_1208IO.jpg
 
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