Slog2 and Recording Internally vs External Recorder at DVinfo.net

Go Back   DV Info Net > Sony XAVC / XDCAM / NXCAM / AVCHD / HDV / DV Camera Systems > Sony Digital Cinema Camera Systems > Sony NXCAM NEX-FS700 CineAlta

Sony NXCAM NEX-FS700 CineAlta
4K EXMOR sensor with SDI, slow-motion recording.


Reply
 
Thread Tools Search this Thread
Old November 14th, 2013, 12:18 AM   #1
Major Player
 
Join Date: Dec 2009
Location: Ottawa, Ontario, Canada
Posts: 202
Slog2 and Recording Internally vs External Recorder

Wondering if I'm shooting Slog2 I can record to the internal Codex (1080p 24fps FX setting) or if I'm shooting my foot in the grade because I need to push it so much vs. other cine gamma modes?

External Recorders which Record DNxHD or higher (Raw?) I'm assuming give me a lot more grading latitude.

Thanks
__________________
Independent Filmmaker in Canada's Capital
Graeme Hay is offline   Reply With Quote
Old November 14th, 2013, 07:22 AM   #2
Sponsor: Westside AV
 
Join Date: Dec 2008
Location: Mount Washington Valley, NH, USA
Posts: 1,365
Re: Slog2 and Recording Internally vs External Recorder

I see a big difference especially if you want to push the grade.

Here is a video, you can download a higher res version, but they are still compressed.


and here is another view of them after John Schultz edited my footage together nicely.

__________________
Olof Ekbergh olof@WestsideAV.com
Westside A V Studios http://www.WestsideAVstore.com/
Olof Ekbergh is offline   Reply With Quote
Old November 18th, 2013, 04:56 AM   #3
Inner Circle
 
Join Date: Dec 2005
Location: Bracknell, Berkshire, UK
Posts: 4,957
Re: Slog2 and Recording Internally vs External Recorder

Everyone is focussing on dynamic range and forgetting that if you shoot SLog2 with 8 bit's it's only 16 grey shades per stop which makes subtle textures like skin tones less realistic. Cinegammas give skin tones and mid range between 35 and 40% more grey shades than SLog2, so they look much better. In addition SLOG2 need mid grey to be at 32%, white at 59% and skin tones at 45-50% to keep everything out of the very highly compressed upper curve. That means some big grading pushes in post (which also needs to be log based). Cinegammas work so much better when exposed correctly, even Cinegammas should be about 1 stop under conventional exposure ( skin tones 55-65%) to keep things in the best part of the curve. But as you have more shades and need to push them less the mid range ends up looking much better.

The only way to get more grading latitude is to use a linear raw recorder and at the moment there are only two options the Odyssey 7Q and Sony IFR5/R5. Any other external recorder with the FS700 is limited by the cameras 8 bit output, so although you can have fewer compression artefacts (which is a good thing and will improve how much you can grade) your still going to be restricted to 8 bit recording.
__________________
Alister Chapman, Film-Maker/Stormchaser http://www.xdcam-user.com/alisters-blog/ My XDCAM site and blog. http://www.hurricane-rig.com
Alister Chapman is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Sony XAVC / XDCAM / NXCAM / AVCHD / HDV / DV Camera Systems > Sony Digital Cinema Camera Systems > Sony NXCAM NEX-FS700 CineAlta

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 03:10 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network