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Forums Sony Cameras EX1 slow motion best settings, Plese advise

  • EX1 slow motion best settings, Plese advise

     John Lovell updated 11 years, 4 months ago 9 Members · 19 Posts
  • Adrian Allen

    March 22, 2008 at 9:12 pm

    Hello,
    I recently purchased the EX1, always loved the Pan HVX200 for its slow motion capabilities. For some reason I feel that the slow motion on the Ex1 is not as smooth as the HVX200. It has a stuttery look and field. (I’m sure the 24p contributed to it)
    My settings were as follows.

    Frame Rate: 60i
    Shutter: 1000 ( I was told making the shutter higher would accomplish smoother motion)
    Format: 720X24p

    Can anyone Recommend the best setting to accomplish this smooth look?
    Also can you recommend the best setting to shoot at 1920X1080
    HQ for independent shorts and documentaries.

    My Best

    creative minds think alike!

  • Craig Seeman

    March 22, 2008 at 9:58 pm

    [Adrian Allen] “Shutter: 1000 ( I was told making the shutter higher would accomplish smoother motion) “

    Opposite.
    That’s why what you’re seeing is stuttery. You probably could have shot 1/120 and maybe even 1/60 to really smooth it at 60fps.

    High shutter speed gives you that “Saving Private Ryan” stuttering effect.

  • Marco Solorio

    March 22, 2008 at 10:01 pm

    [Adrian Allen] “Frame Rate: 60i”

    You need to shoot in 60p to get the best results. Here’s my workflow…

    Shoot 720p60
    Transcode to codec of choice
    Conform 720p60 to 720p24 (wish the native XD footage could conform in Cinema Tools)
    Import into NLE of choice
    Slow motion smooth as silk.

    In short, don’t bring your 720p60 footage into your NLE and apply a slow-motion filter on it… wont work the way you intend to.

    Don’t forget you can also shoot in 1080p30 and conform to 1080p24. Not as much of a slow motion reduction, but still cool nonetheless.

    Marco Solorio | CreativeCow Host | OneRiver Media | Codec Resource Site | Cinesoft | Media Batch

  • ken hon

    March 23, 2008 at 3:40 am

    Aloha,

    There is also a way to shoot 720 60P as slo mo in camera. Select your 720 frame rate that you want to edit in either 24 or 30P. Then in S+Q motion choose 60 frames. This will automatically film at half speed. That is it will film at 60P but download and playback at 30P. You can get it a bit slower using 24P. This is nice as you can see the effect on your viewfinder while you are filming.

    Aloha,

    Ken

  • Craig Seeman

    March 23, 2008 at 4:35 am

    [ken hon] ” a way to shoot 720 60P as slo mo in camera. Select your 720 frame rate that you want to edit in either 24 or 30P. Then in S+Q motion choose 60 frames.”

    And that method should yield better quality then simply shooting 720p60 time base. It’s what I do to shoot slo-mo. The actual data rate during record may well be over 70mbps. The reason is that the resultant file is probably targeted to playback at 35mbps. Whereas if you shot at 720p60 at 35mbps and slowed it down 50% you’ll also have less original data per second.

  • Marco Solorio

    March 23, 2008 at 10:20 am

    [Craig Seeman] “The reason is that the resultant file is probably targeted to playback at 35mbps. Whereas if you shot at 720p60 at 35mbps and slowed it down 50% you’ll also have less original data per second.”

    I haven’t actually tested this yet but am curious to. Does 10 seconds of 720p60 have a smaller file size than 10 seconds of 720p24 S+Q 60? If the file size IS bigger (thus creating a higher quality clip due to more I-frames) then I’ll definitely shoot this way from now on for any slo-mo. For some reason I thought S+Q mode was merely a playback “flag”, sort of like a conform.

    Marco Solorio | CreativeCow Host | OneRiver Media | Codec Resource Site | Cinesoft | Media Batch

  • Craig Seeman

    March 23, 2008 at 2:32 pm

    [Marco Solorio] ” Does 10 seconds of 720p60 have a smaller file size than 10 seconds of 720p24 S+Q 60?”

    Keep in mind that what one is actually measuring is 10 seconds of 720p60 vs what becomes 25 seconds playback of a 10 second recording of 720p24 recorded at p60. I’d strongly suspect that the 720p24/p60 file would be larger.

    In other words what one is comparing is 10 seconds of recording time. 10 seconds of 24/60 is 25 seconds of playback @ 35mbps. 10 seconds of 60 at 60fps is 35mbps so that slowed down in timeline is 13.6mbps. That data rate during recording of 24/60 is probably 87.5mbps . . .

    For the math challenged what I’m saying is that 24/60 is probably recorded at 87.5mbps and slowed to 24fps which is 35mbps.

    Whereas “straight” 720p60 recording is already recorded at 35mpbs so that slowing that down to 24 would be 13.6mbps.

    which is probably one of the reasons the SxS cards by Sony (and Sandisk when they happen) are different than other Express cards. The sustained data rate plus headroom to perform overcrank is fairly high.

  • Ron Shook

    March 23, 2008 at 8:10 pm

    Craig,

    [Craig Seeman] “I’d strongly suspect that the 720p24/p60 file would be larger.”

    That ought be easy enough to check rather than just suspecting? Do 10 seconds each way shooting at anything that moves in some detail and compare the files.
    Doesn’t matter what it is or what it looks like. Shoot your TV.

    Ron Shook
    Shoulder-High Eye Productions
    CreativeCOW Forum Host for Discreet edit*

  • Rafael Amador

    March 25, 2008 at 9:47 am

    Very easy to test it in the very camera. Shoot 720 24fps/60 and play the clip in the camera. The clip will play almost three times longer making a really smooth slowmo.

    Mac OX 10.5.2-FC 6.02-QT 7.4.1
    G5 2x2Gh 4GbRAM-BlackMagic Extreme
    PMBP 17″Core2Duo 4GbRAM-AJA ioHD
    JVC DTV-17″
    SONY EX-1 . SONY PD170
    ..and always a big mess on top of the table.

  • Bruno Fraga

    March 26, 2008 at 12:49 am

    Sorry about my fool doubt but what softwares that conform files?

    Thanks!

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