How Can I improve measurement

[GusepAlfa]

Ciao
Thank you for answering about 3D masdquerade question. Win 7 limitations. New gaming laptop for this project with Win 10
I have bought a new camera D3500 Nikon with AFS micro NIKKOR 60mm 1.28G ED lens F32 ISO100 Inside house, ring leds, room lights, windows closed, some diffuse light. Shutter 20 > 30 seconds. Used calibration test screen inside zephyr for camera calibration. I applied some measurement strips. There is an error in between these strips when measured inside Zephyr. Free 50 photo limit. Variation of 3 in 100mm. What would you suggest?

Salve

[GusepAlfa]

Ciao
For an experiment I ran through photos with Nikon Camera data in jpg imbedded focal length and sensor size (6000 x 4000).
Now the measurements are 3 in 100 but over size rather than under size as with Zephyr internal calibration procedure. I am going to 3D print parts.
Is it a matter of just scaling the mesh? Im I not precise enough with my procedure?
Salve

[cam3d]

Hi GusepAlfa -

Using 3DF Zephyr PRO/AERIAL allows you to align reconstructions to known points in the scene (control points) and perform 3D metric measurements. 3DF Zephyr FREE/LITE don't have these tools, but it is still possible to scale and make measurements with the following instructions: https://www.3dscanninghacks.com/wiki..._Free_And_Lite

Please note that this will not be as accurate as carefully picked control points in PRO/AERIAL, but it may be accurate enough for your needs.