# Calibrated external and internal camera parameters

**URL:** <https://community.pix4d.com/t/calibrated-external-and-internal-camera-parameters/29996>\
**Category:** PIX4Dmatic\
**Created:** [April 30, 2024, 10:05am UTC](https://community.pix4d.com/t/calibrated-external-and-internal-camera-parameters/29996 "2024-04-30T10:05:38Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![antti.lehto](https://avatars.discourse-cdn.com/v4/letter/a/ea666f/32.png) [@antti.lehto](https://community.pix4d.com/u/antti.lehto)\
**Post date:** [April 30, 2024, 10:05am UTC](https://community.pix4d.com/t/calibrated-external-and-internal-camera-parameters/29996/1 "2024-04-30T10:05:38Z")

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Hello, I wanted to know if its possible to get calibrated external and internal camera parameters in text file like it is in Pix4Dmapper? I can find these files in Pix4Dmapper project folder but I cant find similar files in Pix4Dmatic project folder. Pix4Dmatic does have a button to export `image geolocations and orientations` but this has same values as image EXIF data and not calibrated cameras.

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**Author:** ![Pierangelo\_Rothenbuhler](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/pierangelo_rothenbuhler/32/2439_2.png) [@Pierangelo\_Rothenbuhler](https://community.pix4d.com/u/Pierangelo_Rothenbuhler)\
**Post date:** [April 30, 2024, 12:36pm UTC](https://community.pix4d.com/t/calibrated-external-and-internal-camera-parameters/29996/2 "2024-04-30T12:36:10Z")

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Hi, you may find this data in the Open Photogrammetry Format (OPF) export in in PIX4Dmatic: File \> Export \> Project as OPF.

You can find more here:

- This is the general page for OPF: [The Open Photogrammetry Format](https://www.pix4d.com/open-photogrammetry-format/)
- Here you have the specifications: [GitHub - Pix4D/opf-spec: Specification for the Open Photogrammetry Format (OPF)](https://github.com/Pix4D/opf-spec/)
- and here some python tools: [GitHub - Pix4D/pyopf: Python library (and tools) to make it easier to work with OPF projects in python](https://github.com/Pix4D/pyopf/)

Let me know if you find what you need.  
What are you using these for?