- Posts: 13
- Joined: Fri May 31, 2019 12:45 pm
- Real Name: Martin Kacvinsky
A lot of users will use cameras like Pocket 6K Pro or 4K for documentary work.
It is quite common to shoot in 50p (or 60p) while the delivery format is 25p (or 30p). The reason is that you have flexibility to decide:
A. keep some shots in 100 % realtime speed with audio (and throw away every second frame)
B. slow down other scenes to 50 % smooth slow motion effect
In a lot of cases the final videos are viewed on computer or phone screens (almost all consumer screens are 60hz or 120hz, almost never 50hz).
Playing back 25p footage on a 60hz display involves a lot of jittering (choppy playback). Shooting in 30p will solve this, but it doesn't look cinematic at all.
Playback of 24p delivery format on 60hz screens feels overall the best (has cinematic footage and with 3:2 pulldown doesn't have as much jittering as 25p). Also on new 120hz displays (like Apple ProMotion) you can playback 24p natively. The 25p footage will not playback smoothly even on a 120hz screen.
So overall 24p is preferred by a lot of shooters as the best compromise between cinematic feeling and smooth playback on 60hz screens with 3:2 pulldown method.
Currently we have on all BMD cameras:
30p -- has a news gathering feeling, too many frames, doesn't look like cinema movie
25p -- close to 24p but big problem with jittering on 60hz screens (computers, macbooks, iphones...)
24p -- overall best delivery format but missing 48p mode for 50 % slow-motion option
Therefore it would be best to have a native slow-mo option for 24Hz system frequency. I can switch to 48p mode through HFR. However this involves few problems:
1. I have to switch to HFR each time I will reboot the camera,
2. The audio is not in sync (it runs in 50 or 60hz system frequency) which complicates the editing process.
I hope this make sense and thank you for consideration.
And just for a refference, this clip has been shot with Pocket 6K in 50p. And it could have been even more awesome if it was gathered in 48p and then slowed down to 24p (less jittering on computer screens):
https://vimeo.com/kaco/volcano
It is quite common to shoot in 50p (or 60p) while the delivery format is 25p (or 30p). The reason is that you have flexibility to decide:
A. keep some shots in 100 % realtime speed with audio (and throw away every second frame)
B. slow down other scenes to 50 % smooth slow motion effect
In a lot of cases the final videos are viewed on computer or phone screens (almost all consumer screens are 60hz or 120hz, almost never 50hz).
Playing back 25p footage on a 60hz display involves a lot of jittering (choppy playback). Shooting in 30p will solve this, but it doesn't look cinematic at all.
Playback of 24p delivery format on 60hz screens feels overall the best (has cinematic footage and with 3:2 pulldown doesn't have as much jittering as 25p). Also on new 120hz displays (like Apple ProMotion) you can playback 24p natively. The 25p footage will not playback smoothly even on a 120hz screen.
So overall 24p is preferred by a lot of shooters as the best compromise between cinematic feeling and smooth playback on 60hz screens with 3:2 pulldown method.
Currently we have on all BMD cameras:
30p -- has a news gathering feeling, too many frames, doesn't look like cinema movie
25p -- close to 24p but big problem with jittering on 60hz screens (computers, macbooks, iphones...)
24p -- overall best delivery format but missing 48p mode for 50 % slow-motion option
Therefore it would be best to have a native slow-mo option for 24Hz system frequency. I can switch to 48p mode through HFR. However this involves few problems:
1. I have to switch to HFR each time I will reboot the camera,
2. The audio is not in sync (it runs in 50 or 60hz system frequency) which complicates the editing process.
I hope this make sense and thank you for consideration.
And just for a refference, this clip has been shot with Pocket 6K in 50p. And it could have been even more awesome if it was gathered in 48p and then slowed down to 24p (less jittering on computer screens):
https://vimeo.com/kaco/volcano