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Alexa white balance (4 replies and 16 comments)

hank
8 months ago
hank 8 months ago

Hey roger!

 Wondering; do you find yourself keeping the Alexa between 3200 and 4000k mostly? Or ever shoot neutral at 5600?

 Thanks!

hank
8 months ago
hank 8 months ago

Also, if a question goes unanswered in the forum, does it truly exist?

Robert Dempsey
8 months ago

It does exist here . It's holiday time of year. Please be patient.
Happy Holidays to you and your family.

Mike
8 months ago

Also may I add that Roger and James are prepping for their new film so it’s a busy time for them despite the forthcoming holidays.

Robert Dempsey
8 months ago

Where are you located Hank

dmullenasc
8 months ago
dmullenasc 8 months ago

I think in a day exterior situation Roger would be setting the color temp of the camera in that range, he wouldn't stick to 3200K and use an 85 filter.

But keep in mind that Roger records Arriraw, which does not bake-in color temperature -- any digital sensor is somewhat naturally inclined to prefer daylight balance in that it is less sensitive to blue wavelengths and therefore has to boost the blue channel once debayered to RGB when the color temp setting is below 5000K-ish. But that doesn't mean you are actually recording a daylight-balanced color temperature setting in Arriraw since raw is not a color image, it has to be de-mosaiced to color at which point the RGB levels are balanced to whatever color temp setting you choose.

hank
8 months ago

Good call.

Also an 85 filter. Interesting. Is that even necessary when you set the cam to 3200? wouldn't that be doubling up?

dmullenasc
8 months ago

If you were recording a format where color temperature is baked in like ProRes 4444, let’s say, then if you shot in 5500K daylight and set your camera to 3200K, then the recorded image used for post would be rather blue-ish. So an 85 filter would give you a more neutral image in post. But as to why you’d set your camera to 3200K in a 5500K setting if you wanted a normal color rendition, you’d have to ask a DP who worked that way.

Matt Stahley
8 months ago
Matt Stahley 8 months ago

This is a quote from Roger in the Lighting forum when asked about Prisoners. "

I shoot exteriors and day scenes at 5500K. I'm not sure why you think I would work at 3200K. For a shot that combines daylight and tungsten I might rate the camera at 4000K."

hank silver
8 months ago
hank silver 8 months ago

Can anyone explain to me why someone is posting under my name here? I didn't start this topic nor did I make any of the replies. If an admin wants to check the IP addresses of each of the posts I think they'll see this.

Original poster: who are you?

Thanks, 

Tom (aka hank)

Robert Dempsey
8 months ago

Tom its not you if you look the Avatar is different as well. I will look at it later today once I have some coffee in me .

hank silver
8 months ago

Thanks Robert!

Mike
8 months ago

Copied.

Al Duffield
8 months ago

Couldn’t it just be another person called Hank? Wasn’t aware the displayed name needed to be unique

hank silver
8 months ago

Usually when you sign up to a forum or other social media you'll get a "username taken" message if you enter a username already in use.

Robert Dempsey
8 months ago

Username and display names are totally different.

Robert Dempsey
8 months ago

I now know who it is, and it is a Different person with different IP as well.

Robert Dempsey
8 months ago

Hank Change your avatar, please.

Robert Dempsey
8 months ago

Just so you're aware. There's I have my name which you see here. And I also have the same name on Facebook, but there's also about 50 others with the same name that displays, so it's nothing new and there's not much I can do to change it right now, sorry.

hank silver
8 months ago

Hi Robert, have updated my name for simplicity. Weird that you can have two of the same display names on here! Thanks for clearing it up anyway.

Robert Dempsey
8 months ago

As I stated Facebook has the same thing there. There are 100's of Roberts there. LOL why I added senior (Sr) to my name on FB LOL

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