False Color Showing Log, correct?

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Brian Mills
Posts: 6
Joined: Wed Jun 27, 2018 5:08 am

When I am viewing Rec709 in the eyepiece and I turn on false color, the values being shown are of the Log image and NOT the 709 image, correct?

I am shooting on an Alexa Classic.
Brian Mills
Cinematographer
Frederic Merten
Posts: 44
Joined: Thu Nov 26, 2015 11:49 am
Location: Munich, Germany
Contact:

Hello Brian,
The false color exposure check in ALEXA Classic cameras is based on the color processing set for the respective output signal path. So if you have the viewfinder set to Rec 709, the false color exposure check in the viewfinder will be based on the Rec 709 image. If you have the MON OUT at the same time set to Log C, the false color exposure check for MON OUT will be based on Log C.

With the ALEXA LF, ALEXA Mini and AMIRA cameras you can choose if the false color exposure check should be Monitoring-based or Log C-based.
To set this in the ALEXA LF go to: MENU>MONITORING>False color mode
To set this in the AMIRA and ALEXA Mini go to: MENU>MONITORING>EXPOSURE TOOLS>False color mode

Best regards,
Fred
Frederic Merten
Product Management Camera Systems
Brian Mills
Posts: 6
Joined: Wed Jun 27, 2018 5:08 am

Thanks for the clarification!
Brian Mills
Cinematographer
nateliv
Posts: 6
Joined: Tue Dec 25, 2018 12:16 pm

I think it will come down to personal preference but I like using FC on log as every LUT will map mid grey at a different tonal value.




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atomsand
Posts: 1
Joined: Thu Oct 04, 2018 3:44 pm

Is there a possibility to use False Color exposure check based on LOOK in ALEXA 35?
Frederic Merten wrote: Wed Jan 16, 2019 12:39 pm Hello Brian,
The false color exposure check in ALEXA Classic cameras is based on the color processing set for the respective output signal path. So if you have the viewfinder set to Rec 709, the false color exposure check in the viewfinder will be based on the Rec 709 image. If you have the MON OUT at the same time set to Log C, the false color exposure check for MON OUT will be based on Log C.

With the ALEXA LF, ALEXA Mini and AMIRA cameras you can choose if the false color exposure check should be Monitoring-based or Log C-based.
To set this in the ALEXA LF go to: MENU>MONITORING>False color mode
To set this in the AMIRA and ALEXA Mini go to: MENU>MONITORING>EXPOSURE TOOLS>False color mode

Best regards,
Fred
Jan Heugel
Posts: 514
Joined: Wed Aug 13, 2014 3:15 pm
Location: Munich, Germany
Contact:

Dear atomsand,

We're looking into that, but because of ALEV4's 17 stops it is tricky to do that on top of the look.

Please post ALEXA 35 question in the corresponding forum.

Cheers,
Jan
Jan Heugel
Application Engineer
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