weird lines on close-ups

[jerryfranck]

Hey all,

recently shot with the hvx and letus 35 adapter again and noticed weird wavy lines in the background on dark and midtones on closeups.

check out the attached pictures...

these are screencaps from the footage after importing it into FCP.

what could it be...anything to prevent this next time?

thx,
Jerry

 

[Zblock]

I think that's the Bokeh.

 

[wgzn]

yeah, what kind of lens are you using?

 

[jerryfranck]

I think this was an 85mm or 135mm even...Zeiss Superspeed