Alexa 65

[Kevin Packer]

Hello,

 

Just curious, if anyone has any first hand experience flying the Alexa 65? Is it the same power connector as a normal Alexa? Other than it being wider and heavier are there any other challenges with flying it?

 

Any info would be a great help!

 

Cheers

 

Kevin

[Lawrence Karman]

Same connector. Everything the same , just wider and heavier as you stated.

[Alan Rencher]

The Alexa 65 does use more power than the other Alexa cameras, so it is best to run it at 24V.

[Kevin Packer]

Perfect, thanks for the reply's. Much appreciated.

[Frederic Chamberland]

I was convinced the Alexa 65 was the only one in the family that could not be fed with 12V .... Only 24V.

Bueler ?

[Alan Rencher]

I believe you're correct, Frederic. I looked through my notes, and the power supply I made for IMAX for the Alexa 65 required 350W at 24V nominal (28V was the actual output.)

[Benjamin Treplin]

Talked to Arri in Munich in Nov. last year.

Voltage supply is 22vdc to 35vdc. Drawing 200 Watt continuous.

[Michael Fuchs]

Wondering if anyone has flown Alexa 65 and had a plate that could still clip in to the back of the cam. Seems like the bottom of camera is different from regular Alexa's as well as the Studio. Couldn't get the precision plate to line up- lines up with "studio" screws but need a longer screw to clip into back. The spacer block connects with the back of cam in a bad way so that didn't seem to work either.

 

Thanks,

Mike

[Benjamin Treplin]

you talking about this plate?

http://steadimoves.com/product/arri-alexa-steadicam-plate/

[Michael Fuchs]

https://www.cinematicprecision.com/product-page/steadicam-plate

 

This is the one I have access to and couldn't seem to make work. I would assume jerry's is very similar but it's worth a try. Or at least a phone call to him to ask if he knows if his plate could work w 65.

[Benjamin Treplin]

The one on Jerry's page is made by Sal as well. I bought mine at Sal's shop.

 

Give him a call or send him an email. He is keen to keep his stuff up to date.

 

A new spacer block will do it.

[Kevin Packer]

The bottom of the camera is indeed different than a normal Alexa, and wont work with our usual Alexa plates. 

The package that I was using included it's own Steadicam plate for the base to connect the front and back.

[Alex Leung]

Currently on a production using the Alexa 65. Can confirm it uses 24V. The back Anton Bauer battery plate has a built in up-converter that converts a 12V on-board battery to supply 24V to the camera. According to an ARRI tech I spoke with, the camera can run as low as 22V and still function safely. 

So if you are looking to power the camera through your rig, ensure it can support 24V at up to 10 Amps. Currently Steadicam I work with just keeps the onboard battery on the back of the camera to power the camera. 

As for the bottom plate, the Steadicam op had a custom intermediate plate made that connects the front and back. His usual Steadicam plate then get bolted onto the intermediate plate.

FYI, the camera, with a Preston (MDR3), 2 motors, SmallHD 702 monitor, Cinetape, top handle, no eyepiece, onboard battery, Teradek transmitter, small prime lens, and LMB-5 comes in at about 56lbs.