Hello OndrejTrhan,
Thank you for your reply.
I’m using the UI mode.
I have a bad qualilty images (1024*768), very noisy, some extracted from video with compression artefacts and unable to retake any shot. I use a lot of controls points and realign frequently.
The cameras are not precalibrated, but I group them in a lens group and calibration group.
The model is “clean.”
Here are my texture settings :

I need to solve this for my client.
Thanks
Ben