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Ryan Spearman

Can't get focus scale to show on Arri wcu4

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Hi guys,

I'm using a wcu4 on an Alexa Xt with Cooke Anamorphic/i lenses.

LDS is working fine and I've got the focus and iris values on the handset but the actual scale with the depth of field isn't showing.

Any ideas? It's pretty frustrating

Ryan

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Yes I have been through this recently. You have to manually program the values into the SD card in the camera. Even though they are showing up on the handset you still have to manually input around a dozen points. Once you do that the depth of field gauge and other cool features will pop up. It took me about two days of prep to figure this out.

 

The manual input is on the camera side. You have to make a new profile for every lens and then manually switch the lens profile when you change lenses. It only takes a few seconds so it's not as a big of a hassle as it seems. My focus puller loved the system once we figured it out.

Edited by Teddy Smith SOC

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Here is what it will look like once you get it all setup right. The green arrow is the focus reading coming off the cinetape. You can even press a button on the WCU-4 to autofocus to the cinetape! pgncNH5.jpg

8cSC2iI.jpg

Edited by Teddy Smith SOC

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It's actually the arri version of the cinetape that came in the kit from the rental house, the UDM-1. It had a cable that connects directly to the camera. I don't exactly remember how it all hooked up but it all worked once I got everything plugged in correctly and made the custom lens profiles. You would think it would be able to work with just the lens data from the Cookes. But it doesn't seem to work that way. Maybe in a future firmware update.

 

The good news is this would actually work with any lens even non LDS lenses. Just manually enter the lens values, store them in the SD card, and the camera remembers it.

Edited by Teddy Smith SOC

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Yeah, had a quick play with creating the lens file on set today. Certainly seems counterintuitive to be using camera based lens info as opposed to lens based info.

Fantastic potential though, I'm sure it will be great in the future.

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It's really easy to map your own lenses in prep, might be overkill to be downloading them from elsewhere.

Plus every serial number could be just that slight bit different- so best to do it for each job individually. Eventually you'll build up a list so thorough, you might just have every lens

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It's really easy to map your own lenses in prep, might be overkill to be downloading them from elsewhere.

Plus every serial number could be just that slight bit different- so best to do it for each job individually. Eventually you'll build up a list so thorough, you might just have every lens

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