Vertical lines only >ISO100??

[NNN637304331644810065]

Hi there,
my first post:o)
I recently bought a used 645df + P30+, everything seems to work fine but i noticed a vertical red'ish line.
In ISO100, not visible
In ISO400, slightly appearing
In ISO800/1600 clearly

What could that be?
The back has the newest firmware.

Any suggestions?

kind regards!

[NNN637304331644810065]

surprinsingly it goes more crazy.

The line(s) are always at the same place when in the Picture there is red.
I just photographed a white wall, no lines.

?????

[Jon]

This is a column error - basically a column of pixel that are unresponsive. We can generally fix this via a remote calibration. To make arrangements, please contact a Phase One dealer: https://www.phaseone.com/en/about-us/partner-locator