Noisy Artifacts intoduced by Redcine Processing

[Mark Pugh]

I took a shot a couple of days ago - low key, lots of areas under mid-grey.
I've noticed that as I play with the curves, the chunks of artifacts most apparent in the shadows change color and shape.
If I output the shot twice, with different curves, the blobs appear in different places.
Also, turning sharpening on alters the shapes of the artifacts. Noise doesn't just become more apparent, as one would expect from sharpening, the blobby artifacts seem actually larger.
I'm exporting to uncompressed 10bit quicktimes.
WTF?
If this is what we can expect from Redcine, I'd like to know if there is a cleaner output option that bypasses as much processing as possible.
This level of artifacting is much worse than anything I can ever remember seeing from something off a HD or Digibeta tape. I don't these results something I can show a producer and say "This is acceptable".



My display is set to millions of colors
Macbook Pro
latest version of Redcine

 

[Anders Holck]

Mark, can you try and post a few framegrabs?
CMD+shift+3 grabs the redcine screen to the desktop.

Have you tried the NR options in the newest build of RedCine?

Most broadcast cameras has a function called detail coring which is a variable NR.

 

[Mark Pugh]

I'll try NR now. Thanks, Anders

 

[Mark Pugh]

Tried it.

No better - just different again.
I'll try to post later on.

 

[Graeme Nattress]

Please post an image to show me - I'm always working on improving the RAW decoding.

Graeme

 

[hamax1]

I found this post researching a very similar sounding problem (with screencapture) http://reduser.net/forum/showthread.php?t=18328

looking for answers as well. currently TIFF sequence is the only thing i'v found to take care of these artifacts, but I'm not sure i'm ready to add that to my workflow