close range accuracy settings

[hanscastrop1@gmail.com]

I've saved my questions, because sometimes I find the answer myselves after a while, but I really can't find the answer :
reference settings; camera accuracy... How much for turntable setup, so close range photogrammetry? how do I get real world accuracy to put in manually? distance camera <> object is 1m, so default accuracy setting of 10m seems a bit much.
Thanks
Hans

[Corensia]

As far as I know, camera accuracy in the reference settings only matters if your camera has GPS so that number doesn't really matter without coordinates in the image metadata.

[hanscastrop1@gmail.com]

Oke, thanks . Is that with all settings in reference settings?

[Alexey Pasumansky]

Hello Hans,

Accuracy values in degrees and meters for cameras and markers are only important if you are measuring the coordinates of camera locations and marker positions and loading corresponding values in some coordinate system to the Source values tab of the Reference pane.

"Capture distance" value will be only used if you have loaded not only coordinates of the camera locations to the source values tab of the Reference pane, but also camera orientation angles. But for close range projects it is not required in most cases, as Reference pre-selection is not used in such projects, thus "capture distance" parameter is not applicable.

Usually for the close range projects people are using scale bars (measured distances between pairs of points visible on photos) in order to apply the real world scale to the model. Then it is only necessary to define the scale bar accuracy (in meters) according to the measurement accuracy. For example, if you are using regular ruler to measure the distances, the accuracy would be about 0.002 m (2 mm).