Hi Andrew-

 

You’re thinking about black shading, not black balance. Black balance will just make sure black is black. Black shading is about eliminating noise and fixed patterns.

 

-Art

 

_______________________________________________________​ Art   Adams Cinema Lens Specialist ​ ARRI Inc. 3700 Vanowen Street Burbank ,  CA   91505 www.arri.com  818-841-7070 x4212   aadams@... Get all the latest information from www.arri.com, Facebook, Twitter, Instagram and YouTube. ​ ​ This message is confidential. It may also be privileged or otherwise protected by work product immunity or other legal rules. If you have received it by mistake, please let us know by e-mail reply and delete it from your system; you may not copy this message or disclose its contents to anyone. Please send us by fax any message containing deadlines as incoming e-mails are not screened for response deadlines. The integrity and security of this message cannot be guaranteed on the Internet.

From: cml-raw-log-hdr@... <cml-raw-log-hdr@...> on behalf of Andrew Boulter via cml.news <andrew=andrewboulter.com@...>
Date: Thursday, April 1, 2021 at 12:06 PM
To: cml-raw-log-hdr@... <cml-raw-log-hdr@...>
Subject: Re: [cml-raw-log-hdr] Wave-Freefly Hi Speed Camera

Yes, sorry about the examples, they are not great, here’s one more, I have increased the brightness and raised the shadow areas just to so you can see the pattern.  I hasten to add this is only to see the lines, forget the colours etc.  One of my thoughts was that its to do with a black balance, which isn’t possible, I then thought perhaps the temperature of the sensor might be an issue, I know when shooting Phantom some techs have told me they want the camera to ‘warm up”  

 

My main question is , what is producing the pattern, obviously the sensor, but what part of it and why?

 

 

 

Andrew Boulter

Director of Photography

www.andrewboulter.com

UK based but thanks to Covid, currently in Dubai for the foreseeable

+447768877686

+971585047839

On 1 Apr 2021, at 19:25, Colin Elves <colin@...> wrote:

 

I agree 100% with Alister: the frames are too small to judge (😃) but my initial assumption would be that it’s fixed pattern noise. Most cameras address this with a black balance. If that’s not an option here you’ll need to do it in post.

Colin Elves
Director of Photography
Back in Brussels

On 1 Apr 2021, at 20:10, Andrew Boulter <andrew@...> wrote:

Thanks Alister, seems I forgot to mention one important thing, it was lit with sunlight alone, so its not that.

Andrew

 

 

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