How best to use Canon 5d for slow motion

R

Rick106

New member
Hi guys,

I've got a shoot tomorrow for a couple, and I want to be able to shoot to allow playback at 50% speed. I have a canon 5d Mark II. My choices are:

i.) Shoot at 720p 50fps and then playback at 25fps. Easy in post, but results in lower 720p quality film.
ii.) Shoot at 1080p 25fps and then use twixtor at 50%. Better resolution, but twixtor could be temperamental.

Which is the better option to use when I want to have an end result of full HD 1080p quality film shot at 50%. Is it possible to upscale the 720p film in Sony Vegas (my post production tool)?

Thanks,
Rich
 
That's not a possibility. I just want to do the best I can with the gear I have. What would you say is the best option out of the two?

Cheers,
Rich
 
The Mark II doesn't do 50p720, so you've already answered your question, your choice is only using twixtor.
Edit: Seems that Marvin beat me to it :)
 
Sorry!! My bad.. I meant on my Canon 60d. I can either shoot 720p 50fps on the Canon 60d or 1080p 25fps on the Canon 5d ii.
 
Rick106 said:
Sorry!! My bad.. I meant on my Canon 60d. I can either shoot 720p 50fps on the Canon 60d or 1080p 25fps on the Canon 5d ii.
Click to expand...

Depends on what you intend to shoot, if it's only moderate motion, you can use 1080p30, slow down to 25 and add a little twixtor, if it's something like running/jumping, then use 720p50.

Please note that in 720p mode, moire can get horrible.
 
You have to use 720p. But the moire is bad so you have to really watch for that. Don't shoot at f8 and wide scenes, try to get the f-stop as open as you can and also don't nail the focus completely. Better to be slightly blurred than moirehell.
 
While I can accept a bit of moire here and there in my shots, I never shoot 720p because in that mode it can be noticeable even to the untrained eyes of your clients...
What maarek said about shooting slightly out of focus in order to avoid moire is an option of course, but I would not dare trying it, because the difference between acceptable out of focus and totally unacceptable blurry footage is REALLY small,
especially if you re judging focus from the LCD of the camera...
Twixtor is a good option especially if you re shooting daylight and you have the oportunity to use high shutter speeds...but of course the result is very dependent on the motion of your scenes and some things might look unnatural...
I have seen great results with twixtor and some really bad ones...how well can you use it?
My opinion is to do the simplest thing: Shoot 1080p 25 and just slow down by 50% the scenes you want to be slow...I know its a bit stuttering, I know its not REAL slow motion but if use it wisely it can be fine...I do it all the time:)
 
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