Pan drag image

[Skertas]

Hello, I'm a cinematographer, and I've shot a feature film with the new Alexa 35.

I filmed a soot that was a pan from right to left. In the background was a public garden with some buildings behind.

This particular shoot is a drag image; there's no motion blur, something like a high shutter problem.
A flickering or a stroboscopic effect at the end of the pan. The buildings behind jump from frame to frame, and it's a slow pan.

The footage was converted to HDE in production. Maybe that's the problem.
In 10 weeks of shooting, this is the only shoot with this problem.

Does anyone have a problem like this or a solution for it?

I've checked the specs, and the shutter is 180º at 25 fps in an exterior shoot in daylight.

Captura de ecrã 2023-10-09, às 10.50.43.png

Captura de ecrã 2023-10-09, às 10.47.33.png

Captura de ecrã 2023-10-09, às 10.47.26.png

Captura de ecrã 2023-10-09, às 10.47.13.png

[Jan Heugel]

Dear Paulo,

HDE does not tinker with the image. If look at the MXF/ARRIRAW you'll see the same effect.
Without having seen the footage, I guess we're looking a spanning speed issue vs. high contrast edges.

We'd love to have a look at the HDE clip.
Please feel free to mail us/share the clip at digitalworkflow -at- arri.de.

Cheers,
Jan

[Skertas]

Hi Jan, thanks for the reply.

I already sent the file to digitalworkflow@arri.de.

Here is a link to download.

Thanks a lot.
best regards.