Odyssey 7Q RAW (or fs700 4k) issue

[Oleksiy Oliks Kardash]

Shooting on the backlight I found some strange artifacts. Here it is. 4k RAW, ISO 2000, f/4.0, ND filter in highest position - 1/64.
Screenshot from dng RAW:

Full Res: https://drive.google.com/file/d/0BzWWMSYsHfGmRlNrZFhCeWpzX2M/view?usp=sharing

In my opinion it looks like appearance of pixel's strings and rows in construction of the sensor.


My first thought was about sensor’s overheat, but this issue appeared in first minutes of work. Later I opened the same AVCHD shot taken from SD-card and found that all is ok there, no any problems:

Full Res: https://drive.google.com/file/d/0BzWWMSYsHfGmTXJHYnEyeUtVREk/view?usp=sharing

So it looks like the issue of 4k mode of FS700 or O7Q RAW mode.
I shoot many times with sun on a backlight with aperture even 2.0 and never met such problems before.
Here in attachment I put also DNG file.
https://drive.google.com/file/d/0BzWWMSYsHfGmRWZ2VFZ1ckxocFE/view?usp=sharing (Better to download it, because preview doesn't show the problem well)

Any suggestions what could it be?

 

[Oleksiy Oliks Kardash]

emmm... really nobody have any thoughts about this?

 

[weasel-d]

Yes I posted about it here - http://www.dvxuser.com/V6/showthread.php?327825-fixed-pattern-noise-lens-flare-issue&highlight=

and it's a known issue with f5 and f55. There is a lengthy thread about it here - http://community.sony.com/t5/F5-F55/F55-Sensor-Grid-Artifacts/td-p/201051

 

[Oleksiy Oliks Kardash]

Thank you very much! Now it's much clear.
Have you found the proper solution how to reduce this grid in post-production?

 

[McReedy]

try to reset your PP's – or may you have the possibility to test it on a different fs700? If you take a still with your camera is there a grid?