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HDX 900 720 / 50 P slow motion


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#1 Alex Lawrence

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Posted 01 May 2008 - 12:44 PM

Hi all,

i am going to shoot a couple of product shots next week using the HDX 900.
Objekts are moving on a turntable. Camera is moving on Dolly / Jib.
System mode is 720 / 50P. Camera mode is 50P.
As a result of these settings i want to get a nice good looking slow motion.
Editing is FCP. Version 6.01
My Questions :
Is that the right way to create slow motion?
Do i have more noise / less resolution in the slomo?
Shutter setting is "half" i guess.


Thank you very much for your answers.
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#2 Saul Rodgar

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Posted 01 May 2008 - 01:23 PM

Hi all,

i am going to shoot a couple of product shots next week using the HDX 900.
Objekts are moving on a turntable. Camera is moving on Dolly / Jib.
System mode is 720 / 50P. Camera mode is 50P.
As a result of these settings i want to get a nice good looking slow motion.
Editing is FCP. Version 6.01
My Questions :
Is that the right way to create slow motion?
Do i have more noise / less resolution in the slomo?
Shutter setting is "half" i guess.


Thank you very much for your answers.


Doing a test would be the way to go, but I am assuming you can't do that for whatever reason.

I would shoot 50p (maybe even with a much higher shutter speed [depending who much you want to slow it down] to minimize blur and "steppiness' when doing slo mo in FCP) AND with the built in slo mo shutter speed setting and decide in post which way to go.

Acceptable grain/ noise is a subjective matter, so only you can decide how much of it is good for the spot. My experience with the camera is that it is pretty noisy depending on the settings, sometimes too much for my taste while other people don't mind it. The clients may, so I would want to cover myself for that.

If you shoot it both ways it won't take too long to do it while you are there and you'll have the greatest flexibility in post and equally important, keep the client happier.

Edited by Saul Rodgar, 01 May 2008 - 01:24 PM.

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#3 John Sprung

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Posted 01 May 2008 - 01:38 PM

If these are solid objects on a turntable and the camera is on a jib arm, why not have everything really move at the speed you want it to go? Shooting at 50p, you'll have to swing the jib at twice the speed you want to see. At 50p, you'll need twice the light to make the same stop, but the resolution and motion blur will be the same.



-- J.S.
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#4 Saul Rodgar

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Posted 01 May 2008 - 01:41 PM

If these are solid objects on a turntable and the camera is on a jib arm, why not have everything really move at the speed you want it to go? Shooting at 50p, you'll have to swing the jib at twice the speed you want to see. At 50p, you'll need twice the light to make the same stop, but the resolution and motion blur will be the same.



-- J.S.


You got it! The simplest solution that works is always the best.

Edited by Saul Rodgar, 01 May 2008 - 01:43 PM.

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#5 Alex Lawrence

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Posted 01 May 2008 - 02:06 PM

If these are solid objects on a turntable and the camera is on a jib arm, why not have everything really move at the speed you want it to go? Shooting at 50p, you'll have to swing the jib at twice the speed you want to see. At 50p, you'll need twice the light to make the same stop, but the resolution and motion blur will be the same.



-- J.S.



Good point. Thinking about it.

Thanks
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#6 Michael Nash

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Posted 01 May 2008 - 04:00 PM

You should be able to use DVCPRO HD Frame Rate Convertor within FCP to change your 50P footage to slow-mo in a 25P timeline.

http://www.kenstone....flow_balis.html

You don't lose any resolution or get extra noise, beacuse you're simply shooting at a faster frame rate. Leave your shutter set to "half" and you'll get the appropriate film-style motion blur for whatever frame rate you chose. And yes, 50P will be one stop slower than 25P when both rates use the same "half" shutter.
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#7 Alex Lawrence

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Posted 01 May 2008 - 04:47 PM

You should be able to use DVCPRO HD Frame Rate Convertor within FCP to change your 50P footage to slow-mo in a 25P timeline.

http://www.kenstone....flow_balis.html

You don't lose any resolution or get extra noise, beacuse you're simply shooting at a faster frame rate. Leave your shutter set to "half" and you'll get the appropriate film-style motion blur for whatever frame rate you chose. And yes, 50P will be one stop slower than 25P when both rates use the same "half" shutter.

Thanks for the link.
I will test both. 25P and 50P to see what works best for the project.
Can I transport the material via the camera to FCP? Or do I need a deck?
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#8 Michael Nash

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Posted 01 May 2008 - 05:21 PM

Thanks for the link.
I will test both. 25P and 50P to see what works best for the project.
Can I transport the material via the camera to FCP? Or do I need a deck?


You can go firewire out from the HDX900.
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