noticeable lines

[freusch]

Hi,

what kind of lines are those?
The rest is dust, of course.
Test shots with X2D XCD 120mm with f45!!

No lines are visible at f 9 or 16

Kind Regards Frank

forgot the photo

[glaiben]

Reminds me of the flocking used to line older lenses or the interior of 500/2000 series Hasselblads.  Seem to be large enough that you might be able to see the fibers themselves under magnification or with a bright light and loupe.

...gregg

[MGrayson]

At f/45, debris on the back element of the lens can show up, especially if it's not visible at f/16.

[Andy Miller Photo UK]

Get your get cleaned.

[freusch]

I'll take a look, thank you very much

[freusch]

Yes, there were really small thread-like debris on the back element of two lenses.
I have now removed them and will check the lenses in the next few days.

Thank you