C300: How are people shooting slo motion on the C300?

Omar N

Omar N

Active member
Hi folks,

Is it possible to shoot slow motion on the Canon C300 MK1? I see the camera shoots at 1080p24 and 720p60, but the 720p60 is not actually slow motion because its shooting over a 60p timebase. So really it is just realtime motion with more frames.

My question is, is it possible to shoot at 60p over a 24p timebase in camera? If not, then I suppose I need to somehow conform the 60p to 24p in post production, but I am not sure what tools people use to do this. Any advice here?

All help greatly appreciated. Thank you!

Omar
 
On the C100 MKI you would shoot 1080 60i and in post convert to 60p then convert to 24p/whatever.

You'll need to shoot at 1/120 shutter.

I'd test this against 720p60 upscaled to 1080p and converted to 24p, I think the 1080i version will be better.

It's been done on the C100, I've experimented and it works OK, no problems and looks fine. But I used a Ninja recorder which gives a very good quality starting point.

I'm not sure how the C300s internal codec will hold up.

https://vimeo.com/67478934

http://blog.benzenvideoproductions.com/blog/2015/2/10/9cemjuvo6ymfa7vti3pwunpdleoqhe
 
Hi Matt,

Thanks for the reply. So there is no real way to record slow motion in camera, correct? Its a matter of extra post production to get it to look slo mo? What tools do you use to do the conforming? I know back in the day Cinema Tools used to be used for that, but ever since Apple killed it, I am not sure what is used today.
 
Omar N said:
Its a matter of extra post production to get it to look slo mo? What tools do you use to do the conforming?
Click to expand...

I slow down my 60i C100 footage in Adobe Premiere Pro CC. I create a 24p timeline from a 24p clip and then add the 60i clip. I then change the 60i clip speed to 40% and it is now in slow-mo. Premiere takes care of the 60i to 60p conversion without me telling it to do anything. If you're working in a different editor, just Google the NLE name and 60i to 24p slow motion and you'll find a way to do it. Hope that helps!
 
Hold the phone guys! The c300 mk1 can slow the footage down internally. Just set the camera to 720 23.98 and then in the menu go to slow/quick and set your frame rate. That's it! It'll even play back in camera in slow motion.
 
The normal approach C300 mk1 owners would use back when it came out was to instead hire a Sony FS700 for their slow motion! (though now you'd be looking at an FS7 for the job instead)
 
Before the C100 Mk2 came out, I did the 60i to 24p trick in Premiere Pro, and it always worked pretty well. The codec can start breaking down a bit because the same bits per second are being shown slowed down. But the C300 records a much nicer 50mbps MXF codec, so it should work even better.
 
Omar N said:
How are people shooting slo motion on the c300?
Click to expand...

Depending on their budget they hire a sony/red/ursa owner =)

The c300 has no ability to shoot slow motion "in camera". It will always need to be done in post, but conforming is simple, drop it in a 24p timeline and slow down by 50%. Different NLE's will have different nomenclature for the tools, but the overall method remains the same.
 
LeoGrey said:
Depending on their budget they hire a sony/red/ursa owner =)

The c300 has no ability to shoot slow motion "in camera". It will always need to be done in post, but conforming is simple, drop it in a 24p timeline and slow down by 50%. Different NLE's will have different nomenclature for the tools, but the overall method remains the same.
Click to expand...


Wrong, wrong, wrong and completely incorrect. Please do your research before posting. The C300 has been able to over and under-crank(Slow and fast motion) from day one. There are menu settings JUST for this(SPECIAL RECORD). Most of the time it's 720P with the base frame rate of 24(23.98)P and over cranking at 60(59.94)P frames. I've shot slo-mo countless times on my 300. Even plays back in-camera properly. No post trickery necessary.
 
wait, how to I convert the 1080 60i footage to 60p?

When I try this, I believe that premiere combines two interlaced frames to effectively turn the footage into 30p, which doesn't do much for slow motion. If I could keep the 60fps, but lose half the resolution, I'd be happy enough.
 
Shooting 60i is not a viable solution for slowmotion. It's also effectively the resolution of 720, so you gain nothing. Please don't attempt to pass off 60i footage with a dodgey work around to paying clients who ask for overcrank.
 
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