# Camera lost calibration during shooting

**URL:** https://community.pix4d.com/t/camera-lost-calibration-during-shooting/20547
**Category:** PIX4Dmapper Questions/Troubleshooting
**Created:** [November 22, 2021, 9:51am UTC](https://community.pix4d.com/t/camera-lost-calibration-during-shooting/20547 "2021-11-22T09:51:51Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Thierry\_Bernard](https://avatars.discourse-cdn.com/v4/letter/t/e9bcb4/32.png) [@Thierry\_Bernard](https://community.pix4d.com/u/Thierry_Bernard)
#### Post date: [November 22, 2021, 9:51am UTC](https://community.pix4d.com/t/camera-lost-calibration-during-shooting/20547/1 "2021-11-22T09:51:51Z")

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Hi,

Here is the result after analysing a set of pictures from a Phantom 4 RTK: [upload://25els8FHHr4tuNTEoqu9qmmXg9K.jpeg](https://www.dropbox.com/s/kbd5yoxe8yjx7ln/SEC-RM19_17nov.JPG?dl=0)

“Altitude Optimization” on DJI Go was enabled.

Why camera is sudenly uncalibrated ?

Final cloud of points gives 1.5m error in Altitude.

Thank you for your comments,

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### Author: ![Blaz](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/blaz/32/4344_2.png) [@Blaz](https://community.pix4d.com/u/Blaz)
#### Post date: [November 25, 2021, 7:46am UTC](https://community.pix4d.com/t/camera-lost-calibration-during-shooting/20547/2 "2021-11-25T07:46:28Z")

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Hi @Thierry_Bernard,

Thank you for contacting us and for sharing the screenshots. From what I can see, the issue are the uncalibrated cameras that were captured during before/after the mission.

Would it be possible to share the .pdf quality report so we can have a look at the processing options that were used?

Best,