One Summer Evening with the FS700 - Page 2 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 May 29th, 2012, 11:27 AM   #16
Inner Circle
 
Join Date: Dec 2005
Location: Bracknell, Berkshire, UK
Posts: 4,957
Re: One Summer Evening with the FS700

Not quite sure how Den managed that and I'm not sure he is too, as the Samurai on paper can't do 1920x1080 50p or 60p.

I'm still looking in to this. I'll have access to a FS700 on Thursday and I'm taking my Gemini which can do 1080p60 to test it out.
__________________
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 With Quote
Old May 29th, 2012, 11:31 AM   #17
Major Player
 
Join Date: Mar 2006
Location: Las Vegas, NV United States
Posts: 361
Re: One Summer Evening with the FS700

Look forward to your results Alister - Happy Shooting!
Lonnie
__________________
Lonnie Bell
mamas boy productions
Las Vegas, NV
Lonnie Bell is offline   Reply With Quote
Old May 29th, 2012, 01:53 PM   #18
Inner Circle
 
Join Date: Aug 2006
Location: Efland NC, USA
Posts: 2,315
Re: One Summer Evening with the FS700

Keep us posted Alister. I would enjoy getting to try one out myself.
__________________
http://www.LandYachtMedia.com
Chris Medico is offline   Reply With Quote
Old May 31st, 2012, 07:29 AM   #19
Major Player
 
Join Date: Jan 2006
Location: Victoria Australia
Posts: 246
Re: One Summer Evening with the FS700

Quote:
Originally Posted by Alister Chapman View Post

My suspicion is that the camera is storing the 240fps video in an internal memory buffer and then reads out that memory at 60fps, writing a 60fps AVCHD file to the SD card that is then flagged to playback at 24 or 30fps.
I did a Weisscam 1000fps shoot yesterday and this is the exact same principal that camera works under. It internally records to a RAM buffer then prints out to HD-SDI in real time, so it takes a while until you can take another shot. I have to say filming rugby players at 1000fps under a bevy of 18K HMI's looked absolutely amazing.
__________________
Peter Corbett
Powerhouse Productions www.php.com.au
Peter Corbett is offline   Reply With Quote
Old May 31st, 2012, 04:43 PM   #20
Inner Circle
 
Join Date: Dec 2005
Location: Bracknell, Berkshire, UK
Posts: 4,957
Re: One Summer Evening with the FS700

I can confirm that you can read the 50/60 fps buffer stream vis 3G Sdi to an external recorder. I was able to test it today recording uncompressed to a Convergent Deign Gemini. So, 240fps uncompressed is possible. Very cool!
__________________
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 With Quote
Old May 31st, 2012, 05:36 PM   #21
Major Player
 
Join Date: Mar 2006
Location: Las Vegas, NV United States
Posts: 361
Re: One Summer Evening with the FS700

Thanks for the follow up, Alister!

Will a single link HD-SDI work at the 240fps or does it need to be 3G?
(the Samurai specs per their website, they list the input as HD/SD and the output as 3G/HD/SD. And based on Den Lennie's report - I'm a little confused...)

Thanks for shedding info and light!
Lonnie
__________________
Lonnie Bell
mamas boy productions
Las Vegas, NV
Lonnie Bell is offline   Reply With Quote
Old June 1st, 2012, 03:59 AM   #22
Inner Circle
 
Join Date: Dec 2005
Location: Bracknell, Berkshire, UK
Posts: 4,957
Re: One Summer Evening with the FS700

The FS700 writes slow mo from the memory buffer to AVCHD and the SD card at either 50 or 60 fps depending on which country zone the camera is set to. The camera output can be set in the menu to either 25/30p or 50/60p, if set to 50/60p the output is 3G. In either case the buffering happens at 50/60p. So, if the output is set to 25/30p you only get every other frame on the output Sdi at 1.5G. The end result of this is that if you shoot at 200 fps with the camera output at 25p you would end up with an external recording the equivalent of 100 fps with a 180 degree shutter. Still very useful and a nice option. But to get the full benefit of external recording you need to set the FS700 to output 50/60p over 3G SDi and then you must use an external recorder that has 3G SDi and can record at 1080 50/60p which the samurai can not do.
__________________
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 With Quote
Old June 1st, 2012, 07:40 AM   #23
Major Player
 
Join Date: Mar 2006
Location: Las Vegas, NV United States
Posts: 361
Re: One Summer Evening with the FS700

Thanks for the succinct answer and always a pleasure to read and watch your craft, Alister!
Lonnie
__________________
Lonnie Bell
mamas boy productions
Las Vegas, NV
Lonnie Bell is offline   Reply With Quote
Old June 2nd, 2012, 10:39 AM   #24
Major Player
 
Join Date: Jan 2010
Location: Maassluis, The Netherlands
Posts: 294
Re: One Summer Evening with the FS700

Quote:
Originally Posted by Alister Chapman View Post
The FS700 writes slow mo from the memory buffer to AVCHD and the SD card at either 50 or 60 fps depending on which country zone the camera is set to. The camera output can be set in the menu to either 25/30p or 50/60p, if set to 50/60p the output is 3G. In either case the buffering happens at 50/60p. So, if the output is set to 25/30p you only get every other frame on the output Sdi at 1.5G. The end result of this is that if you shoot at 200 fps with the camera output at 25p you would end up with an external recording the equivalent of 100 fps with a 180 degree shutter. Still very useful and a nice option. But to get the full benefit of external recording you need to set the FS700 to output 50/60p over 3G SDi and then you must use an external recorder that has 3G SDi and can record at 1080 50/60p which the samurai can not do.
This is very, very interesting to know!
__________________
Brainstormnavigator searching for the hole in the sky.....
Audiovisual Designer (NL) - http://www.brokxmedia.nl
Walter Brokx is offline   Reply With Quote
Old June 2nd, 2012, 07:36 PM   #25
Major Player
 
Join Date: Mar 2006
Location: Tampa
Posts: 220
Re: One Summer Evening with the FS700

God that 240fps is sweet, I thought the S&Q 60p on the FS100 was the beez-neez. This already has me thinking upgrade from my FS100 that I've had for a scant 2 weeks now. Nice...
Chris Joy is offline   Reply With Quote
Old June 6th, 2012, 03:46 PM   #26
Major Player
 
Join Date: Jan 2010
Location: Nieuw-Vossemeer, The Netherlands
Posts: 451
Re: One Summer Evening with the FS700

Quote:
Originally Posted by Alister Chapman View Post
The FS700 writes slow mo from the memory buffer to AVCHD and the SD card at either 50 or 60 fps depending on which country zone the camera is set to. The camera output can be set in the menu to either 25/30p or 50/60p, if set to 50/60p the output is 3G. In either case the buffering happens at 50/60p. So, if the output is set to 25/30p you only get every other frame on the output Sdi at 1.5G. The end result of this is that if you shoot at 200 fps with the camera output at 25p you would end up with an external recording the equivalent of 100 fps with a 180 degree shutter. Still very useful and a nice option. But to get the full benefit of external recording you need to set the FS700 to output 50/60p over 3G SDi and then you must use an external recorder that has 3G SDi and can record at 1080 50/60p which the samurai can not do.
So if I understand well I can make a burst shoot of 240 fps (ntsc setting), record it as I-frame with my nanoflash set at 1080p30, thus taking 120 fps of the initial 240. With Cinematools flag it as 25p and import it in a 25p timeline. The end result is 120fps brought down to 25p, so almost 5 times slomo with the nanoflash. Correct?
Cees van Kempen is offline   Reply With Quote
Old June 7th, 2012, 11:54 AM   #27
Inner Circle
 
Join Date: Dec 2005
Location: Bracknell, Berkshire, UK
Posts: 4,957
Re: One Summer Evening with the FS700

Yes, that is correct. It would be the equivalent of 120fps with a 180 degree shutter or 1/240 shutter.
__________________
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 With Quote
Old June 9th, 2012, 11:44 AM   #28
Major Player
 
Join Date: Dec 2004
Location: New York City
Posts: 613
Re: One Summer Evening with the FS700

One thing probably worth considering with overcrank 60fps, 120fps, 240fps footage recorded to AVCHD is that AVCHD has a significant temporal compression component which likely gets more efficient as motion gets slowed down. As you increase framerates, the similarities between frames almost always become significantly greater, which should allow the efficiency of long-GOP AVCHD to increase substantially. I'd be interested in testing this, but my understanding is that GOP codecs do exceedingly well at recording a bunch of very similar frames.

Then again some of this effect may be lessened slightly given the lack of motion blur at such frame rates.
Noah Yuan-Vogel is offline   Reply With Quote
Old June 9th, 2012, 12:25 PM   #29
Inner Circle
 
Join Date: Dec 2005
Location: Bracknell, Berkshire, UK
Posts: 4,957
Re: One Summer Evening with the FS700

Yes, long GOP codecs become more effective at higher frame rates due to the reduced temporal differences between frames. The FS700 takes full advantage of this. At up to 30fps the bit rate is 24Mb/s, when you go to S&Q mode the bit rate increases to 28Mb/s for 60fps, so only a 4Mb/s bit rate increase but double the number of frames.
__________________
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 With Quote
Old June 9th, 2012, 01:49 PM   #30
Major Player
 
Join Date: Dec 2004
Location: New York City
Posts: 613
Re: One Summer Evening with the FS700

isn't the 28Mbps AVCHD mode only for 1080p60 recorded footage? That is how it works on my FS100, if I want to record S&Q it is always records the 60fps footage into 24fps FX mode (24MBps)
Noah Yuan-Vogel 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 04:55 AM.


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