Different Focal Length and Different Rotation of Camera in Photogrammetry - FORBIDDEN (!?)
polycounter lvl 9
Hello,
i have been using some old version of agisoft metashape, now im using
some newer but still older version (than the current one is). Its 1.5.5.
With this "newer but still old version" i got new error messages pop up here there, these didnt pop up EVER in previous versions.
They say:
Warning! The following problems can lead to suboptimal results:
- Images with variable zoom are added to the project. It is strongly recommended to avoid zooming as much as possible.
Happens when i upload images with "zoom" (or different Focal lenght in other words).
I have ALWAYS done this and never had this warning pop up before... DOes using different Focal Lenght ("zoom") really negativelly affect the final quality of the scan...? I have never noticed that...? IS that true? Or is that true only with never versions of metashape and older could handle it and newer give worse results? Or is it in all photogrammetry software that using different focal length leads to bad results...? I would swear i did some tests with this back in 2015 (or whatever) when i started with 3D scanning and never saw bad results...?
Is it worse? How much worse is it...? Zoom is sometimes necessary i feel... Should i really avoid it like the plague?
And another one:
Warning! The following problems can lead to suboptimal results:
- Images with different orientation are added to the project. It is strongly recommended to disable auto rotation in the camera or photo processing software.
Again...? Does different rotation matter? (in this example i scanned some leaf and few photos had the same leaf, the same side of the leaf, just aprx. 90 degree rotated...
I have dont this before i think and no problem. No it gives me this warning and also the point cloud looks weird... (like wrong, "normals" flipped).
So how is?
1) Is using different Focal length really THAT BAD? Should i avoid it at all cost...? (any pictures of tests for this...?)
2) Is using different rotation (mainly switching holding the camera verticaly or horizonatally; but even rotations like 30% only for example)... Is this also BAD...? How MUCH bad... should be avoided at ALL COSTS...?
(camera i use: Nikon D3100)
With this "newer but still old version" i got new error messages pop up here there, these didnt pop up EVER in previous versions.
They say:
Warning! The following problems can lead to suboptimal results:
- Images with variable zoom are added to the project. It is strongly recommended to avoid zooming as much as possible.
Happens when i upload images with "zoom" (or different Focal lenght in other words).
I have ALWAYS done this and never had this warning pop up before... DOes using different Focal Lenght ("zoom") really negativelly affect the final quality of the scan...? I have never noticed that...? IS that true? Or is that true only with never versions of metashape and older could handle it and newer give worse results? Or is it in all photogrammetry software that using different focal length leads to bad results...? I would swear i did some tests with this back in 2015 (or whatever) when i started with 3D scanning and never saw bad results...?
Is it worse? How much worse is it...? Zoom is sometimes necessary i feel... Should i really avoid it like the plague?
And another one:
Warning! The following problems can lead to suboptimal results:
- Images with different orientation are added to the project. It is strongly recommended to disable auto rotation in the camera or photo processing software.
Again...? Does different rotation matter? (in this example i scanned some leaf and few photos had the same leaf, the same side of the leaf, just aprx. 90 degree rotated...
I have dont this before i think and no problem. No it gives me this warning and also the point cloud looks weird... (like wrong, "normals" flipped).
So how is?
1) Is using different Focal length really THAT BAD? Should i avoid it at all cost...? (any pictures of tests for this...?)
2) Is using different rotation (mainly switching holding the camera verticaly or horizonatally; but even rotations like 30% only for example)... Is this also BAD...? How MUCH bad... should be avoided at ALL COSTS...?
(camera i use: Nikon D3100)
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