Basic Questions about slow-mo and 24 frames at DVinfo.net

Nathan Quattrini · August 6th, 2007, 10:33 AM

I will be filming my first short starting this weekend. From what I have gathered on the boards, I should film in 24 p(f) on my Canon A1 with a 1/48 shutter? That gives the best motion correct? What about pans? Do they need to be real slow to avoid issues?
And any part I want in slow motion should be filmed in 60i 1/60 shutter? How well does that work for putting them both on 1 timeline? I use Premiere Pro 2 to eedit (3 once I`m done filming). The sow motion will mostly be walking, yelling, things like that...no fast action stuff.

Thanks guys

Dylan Pank · August 6th, 2007, 03:59 PM

Film the slow motion stuff at 60i 120/sec, that way the motion signature would match the 24p material (i.e. 120=60x2::48=2x24)

Exposure will take a hit, but it would be just the same if you were shooting on film.

Speed of pans are only an issue if you are panning across static material (which IMHOM never looks great) in such a case then yes, pan slowly. If you are panning with a moving object (a person waling or a car driving for example) then you'll be fine.

Don't know enough about Premiere pro, sorry.

Christopher Witz · August 8th, 2007, 07:46 AM

I thought 1/60th was the best bet for anything 60i?

Dylan Pank · August 8th, 2007, 08:17 AM

Sure, but in this case, it's not 60i, it's pseudo 60p that will be slowed down to 24p.

A film camera shooting at 60fps would have a shutter speed of 120/sec, so that's what you want to simulate for 24p slow mo.

Nathan Quattrini · August 13th, 2007, 08:44 PM

ok i will try it and come back later to learn how to slow it properly...once i have a computer that can edit HDV :D

August 6th, 2007, 10:33 AM	#1
Nathan Quattrini Major Player Join Date: Jan 2007 Location: Warwick, Rhode Island Posts: 740	Basic Questions about slow-mo and 24 frames I will be filming my first short starting this weekend. From what I have gathered on the boards, I should film in 24 p(f) on my Canon A1 with a 1/48 shutter? That gives the best motion correct? What about pans? Do they need to be real slow to avoid issues? And any part I want in slow motion should be filmed in 60i 1/60 shutter? How well does that work for putting them both on 1 timeline? I use Premiere Pro 2 to eedit (3 once I`m done filming). The sow motion will mostly be walking, yelling, things like that...no fast action stuff. Thanks guys __________________ Cinematography Site

August 13th, 2007, 08:44 PM	#5
Nathan Quattrini Major Player Join Date: Jan 2007 Location: Warwick, Rhode Island Posts: 740	ok i will try it and come back later to learn how to slow it properly...once i have a computer that can edit HDV :D __________________ Cinematography Site

August 6th, 2007, 03:59 PM	#2
Dylan Pank Major Player Join Date: Nov 2004 Location: Portsmouth, UK Posts: 611	Film the slow motion stuff at 60i 120/sec, that way the motion signature would match the 24p material (i.e. 120=60x2::48=2x24) Exposure will take a hit, but it would be just the same if you were shooting on film. Speed of pans are only an issue if you are panning across static material (which IMHOM never looks great) in such a case then yes, pan slowly. If you are panning with a moving object (a person waling or a car driving for example) then you'll be fine. Don't know enough about Premiere pro, sorry.

August 8th, 2007, 07:46 AM	#3
Christopher Witz Major Player Join Date: Feb 2006 Location: Louisville, KY Posts: 591	I thought 1/60th was the best bet for anything 60i?

August 8th, 2007, 08:17 AM	#4
Dylan Pank Major Player Join Date: Nov 2004 Location: Portsmouth, UK Posts: 611	Sure, but in this case, it's not 60i, it's pseudo 60p that will be slowed down to 24p. A film camera shooting at 60fps would have a shutter speed of 120/sec, so that's what you want to simulate for 24p slow mo.