What is Pulldown?

Many professional and consumer cameras available today do not send true 1080p24, 1080p23.98, 1080p25,

1080p29.97 or 1080p30 signals down their SDI or HDMI outputs.

displays 1080i59.94 or 1080i60, then you can easily remove the pulldown by following these steps:

• Select the Input Menu from the top Left and toggle the blue arrow underneath Record repeatedly until you see 98 (or 1080p24) displayed. You may not get a green tick in this column immediately.

Instead they send 1080i59.94 in NTSC regions (eg USA, Japan), and 1080i50 in PAL regions (eg Europe)

In order to convert the signal from the internal recording format to 1080i5994 or 1080i50, they use a process called 3:2 or 2:2 pulldown.

Pulldown is only applicable to interlaced HD signals, not 4K

You will, of course, want the Sumo19 to record the actual frame rate such as 1080p23.98, not the1080i59.94 to disk. In many cases, it is not possible for the Sumo19 to detect when pulldown has been applied to the video, so you will have to set the correct mode of removal on the Sumo19 to match the setup of your camera.

With some cameras, the Sumo19 can detect and remove the pulldown automatically, in which case the mode you expect (eg 1080p23.98) will display on the Sumo19 and you will not have to do anything further.

If there is no input detected, then toggle the input by pressing the screen until you see the input you wish to record.

Atomos is adding auto-detection support for more cameras, please check for firmware updates regularly at www.atomos.com

1080p23.98 or 1080p24

If you have set 1080p23.98 or 1080p24 in your camera and your Sumo19

• Your Sumo19 needs to analyse the video for about 1 second, in order to detect the pulldown sequence and remove
• If it is not automatically detected after 1 second, wave your hand from side to side in front of the lens, or wave the camera from side to side for a few The Sumo19 will detect the pulldown cadence

in the movement, and you will see a green tick along with the video displayed on the screen.

• 3:2 pulldown detection is difficult, if not impossible to detect on completely still This is why you should wave your hand in front of the lens.

3:2 pulldown detection is difficult, if not impossible to detect on completely still video. This is why you should wave your hand in front of the lens.

If you lose the input detection – for example you unplug the SDI cable or go to Playback mode, you will need to wave your hand or the camera again, when the signal is restored to the Sumo19.

Some cameras use a variant of pulldown removal, for example Panasonic Advanced pulldown. The Sumo19 does NOT support this format, and it will not be detected.

Standard Panasonic pulldown is supported, ensure in the Panasonic camera settings that pulldown is not set to Advanced.

1080p25, 1080p29.97 or 1080p30

For these modes, simply press the    blue arrow underneath Record on

the input menu repeatedly until your 1080p desired format is displayed. There is no need to wave your hand or the camera, as 2:2 pulldown removal does not require moving video.