Author Topic: Pink/Blue/Purple dot - Raw video on the 5D Mark II  (Read 3512 times)

singoz

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Pink/Blue/Purple dot - Raw video on the 5D Mark II
« on: August 29, 2014, 11:07:06 AM »
Hey everybody! I just got a 5D mark II, and I was excited to start shooting RAW video with it. And it works perfect! Recording, transferring and conforming to DNG and so on. The ONLY thing is.. I get a little dot almost in the middle of the frame. It changes between pink, purple and blue in color. (See attachment). Does anybody know what this is and if there's a fix for it?



Thank you so much!
Best regards, Anton.

Spottyq

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Re: Pink/Blue/Purple dot - Raw video on the 5D Mark II
« Reply #1 on: August 29, 2014, 02:15:53 PM »
I couldn't say for sure what the problem is, but I have a potential fix for you : http://rungunshoot.com/magic-lantern-raw-on-the-5dmkiii/ (somewhere in the middle of the page, the title of the part you are interested with is : "Speaking of ISO, watch out for dead pixels!".)
It appears to be for FCPX only, and it does sadly requires quite a bit of post work.

Depending on your issue, it could go away with lower ISO or lower sensor temperature.
To help others diagnose the issue, could you say if it only happens with ML's raw video (at which resolution?), or also with Canon's H.264 video. Maybe even in photo mode ?

It may be useful to first let the sensor build heat up (simply let live view running for 20min or so) to accentuate the issue.

Hope that helps :-)

singoz

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Re: Pink/Blue/Purple dot - Raw video on the 5D Mark II
« Reply #2 on: August 29, 2014, 03:58:33 PM »
Hey! I tried the "Vertical Stripes Fix" when I conformed the clips from MLV to DNG's, and it fixed my problem! :)

Still, thank you very much!

Elviin

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Re: Pink/Blue/Purple dot - Raw video on the 5D Mark II
« Reply #3 on: March 07, 2015, 02:57:19 PM »
Hello,

I have shot a footage with these kind of dots. I understand the "Vertical Stripes Fix" as a fix during a conversion. Is there a way how to fix it in the LM configuration? I am new to RAW shooting. I have followed these step by step instructions http://www.magiclantern.fm/forum/index.php?topic=11205.msg108929#msg108929 .

The camera is Canon 5D Mark II. The curious fact is the issue seems to be connected to over-exposition as it was not visible in the interior. The format of the output is MLV as the result of the configuration in the above link.

Here is a sample from the footage with the dots included: http://imgur.com/DQ1gmXk No post processing was included.

Is there any way how to fix this in the ML settings?

ML:
magiclantern-Nightly.2015Mar03.5D2212.zip
Built on: 2015-03-03 00:09:38 +0100
Changeset: e8cc6e5

CF: Sandisk Extreme Pro 64GB 160MB/s

Thank you for a hint.