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SloMo in PAL
- Thread starter Aejaz
- Start date
. There are some threads on slomo effects with the NTSC but not PAL....i.e. 25P and 50i.Re: SloMo in PAL
Have not tried yet, but I guess the procedure is the same in PAL (50i to 25P) than in NTSC (60i to 24P). The only difference should be in the slowing factor : 50% in PAL vs 40% in NTSC.
I don't know if you already read this article, but here's the link — a very complete procedure is detailed :
http://www.rarevision.com/articles/slow_motion.php
I plan to make some tests soon, I'll keep you informed.
Have not tried yet, but I guess the procedure is the same in PAL (50i to 25P) than in NTSC (60i to 24P). The only difference should be in the slowing factor : 50% in PAL vs 40% in NTSC.
I don't know if you already read this article, but here's the link — a very complete procedure is detailed :
http://www.rarevision.com/articles/slow_motion.php
I plan to make some tests soon, I'll keep you informed.
Re: SloMo in PAL
Anartiste.....Thanx for the link...but as u know it also talks about the 24P and 60i....and not 25P and 50i.
The reason I stress this point is that somewhere (perhaps in one of the brochures...cant remeber really) I read that one can get REAL .... and nice.... slo mo with an NTSC model. Does that mean aresult better than PAL ??? I dont know. But if that is the case, I wonder what that exactly means.
Anartiste.....Thanx for the link...but as u know it also talks about the 24P and 60i....and not 25P and 50i.
The reason I stress this point is that somewhere (perhaps in one of the brochures...cant remeber really) I read that one can get REAL .... and nice.... slo mo with an NTSC model. Does that mean aresult better than PAL ??? I dont know. But if that is the case, I wonder what that exactly means.
Re: SloMo in PAL
I think it just means that 24 is 40% of 60, and 25 is 50% of 50, which gives an advantage to NTSC on this particular domain : the slow motion gets slower once de-interlacing is done. One second of PAL footage will last 2 seconds once processed while the NTSC second will last 2.5 seconds (25% slower). Not that much of a difference, is it ? On the other hand, PAL superior vertical definition will allow a better spatial definition once de-interlaced.
The other advantage of NTSC over PAL on this issue is that you can shoot in 30P and later get your footage slowed down to 24P, which gives you an action slowed down at 80% of its original speed without having to de-interlace the footage and thus getting a better image quality. Us PAL users only have the 50% de-interlaced option.
But, apart from these standard related differences, I don't see the reason why the technical process would be different between PAL and NTSC.
If you think that 50% is definitely not enough, what you can do, if possible, is ask your talents to move a little slower than normal on the shots to be processed, so that the effect is enhanced.
I think it just means that 24 is 40% of 60, and 25 is 50% of 50, which gives an advantage to NTSC on this particular domain : the slow motion gets slower once de-interlacing is done. One second of PAL footage will last 2 seconds once processed while the NTSC second will last 2.5 seconds (25% slower). Not that much of a difference, is it ? On the other hand, PAL superior vertical definition will allow a better spatial definition once de-interlaced.
The other advantage of NTSC over PAL on this issue is that you can shoot in 30P and later get your footage slowed down to 24P, which gives you an action slowed down at 80% of its original speed without having to de-interlace the footage and thus getting a better image quality. Us PAL users only have the 50% de-interlaced option.
But, apart from these standard related differences, I don't see the reason why the technical process would be different between PAL and NTSC.
If you think that 50% is definitely not enough, what you can do, if possible, is ask your talents to move a little slower than normal on the shots to be processed, so that the effect is enhanced.
Barry_Green
Moderator
Re: SloMo in PAL
[quote author=Aejaz link=board=Events;num=1081853082;start=0#2 date=04/13/04 at 06:36:16]I read that one can get REAL .... and nice.... slo mo with an NTSC model. Does that mean aresult better than PAL ??? I dont know. But if that is the case, I wonder what that exactly means. [/quote]
It's because the NTSC model can shoot at three frame rates, and the PAL model shoots at only two. When using the NTSC model, you could shoot your project at 24P, and shoot some slow-mo segments at 30P. The 30P will import into your 24P project and play back as a frame-for-frame slow-mo effect, just like a film camera would if you shot at 30fps. That's a feature the PAL camera can't match because it does only 25P/50i, there is no equivalent third frame rate.
The downside is, it's a very mild slow motion, only about 20%. But for crystal-clear perfect slow mo rendering, it's the best.
[quote author=Aejaz link=board=Events;num=1081853082;start=0#2 date=04/13/04 at 06:36:16]I read that one can get REAL .... and nice.... slo mo with an NTSC model. Does that mean aresult better than PAL ??? I dont know. But if that is the case, I wonder what that exactly means. [/quote]
It's because the NTSC model can shoot at three frame rates, and the PAL model shoots at only two. When using the NTSC model, you could shoot your project at 24P, and shoot some slow-mo segments at 30P. The 30P will import into your 24P project and play back as a frame-for-frame slow-mo effect, just like a film camera would if you shot at 30fps. That's a feature the PAL camera can't match because it does only 25P/50i, there is no equivalent third frame rate.
The downside is, it's a very mild slow motion, only about 20%. But for crystal-clear perfect slow mo rendering, it's the best.