alright! How do I avoid the Focus issue? You mean auto focus?
I looked back to my geodetic study books about photogrammetry and there are a fue things to consider before alignment!!!
Set Prior Pose to unknown. Because you don’t know the relative Camera Position before the Alignment! You can set it to locked if you do full body scans and the Position of your cameras are therefore known.You can use alsothe options Position or Position and Orientation if the Position of your Cameras are already known and you want to finetune those Positions within the Alignment process.
Prior Calibration and Prior Lense distortion should also be set to unknown if you did not calibrated your camera by yourself and if you didn’t undistorted it in your preprocessing Raw/Image-software before importing them to RC. the option Approximate in Prior Calibration can also be used because you know the focal length you used and it will help the software to calculate it exactly. fixed will be used if you calibrated the Camera by yourself and if you don’t want RC to change anything of those values.
In the Alignment Settings I found out that the Max feature Projection Error is for detecting some Errors and to set the overall Quality/sensitivity of your Alignment.
Camera Priors i would always turn to false because Camera-GPS is weighted in the alignment process and the accuracy is pretty bad.
correct me if i am wrong :)!