# Error with cameras

**URL:** <https://community.pix4d.com/t/error-with-cameras/19076>\
**Category:** PIX4Dmapper\
**Created:** [July 22, 2021, 4:43am UTC](https://community.pix4d.com/t/error-with-cameras/19076 "2021-07-22T04:43:49Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![mitchell.pearce](https://avatars.discourse-cdn.com/v4/letter/m/0ea827/32.png) [@mitchell.pearce](https://community.pix4d.com/u/mitchell.pearce)\
**Post date:** [July 22, 2021, 4:43am UTC](https://community.pix4d.com/t/error-with-cameras/19076/1 "2021-07-22T04:43:49Z")

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Hi,

We are using a P4PRTK which is post processed. The coordinates for the photos are good, however I am getting something like the below image happening after Initial Processing.

Any suggestions would be helpful. Thanks.

 ![Pix4d1](https://global.discourse-cdn.com/pix4d/original/2X/b/b4e827194fe6cb2314868b75a1e0c19e0698dd2c.jpeg)

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**Author:** ![Jason\_Hagon](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/jason_hagon/32/4800_2.png) [@Jason\_Hagon](https://community.pix4d.com/u/Jason_Hagon)\
**Post date:** [July 22, 2021, 8:49am UTC](https://community.pix4d.com/t/error-with-cameras/19076/2 "2021-07-22T08:49:29Z")

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Hi @mitchell.pearce, Try the alternative calibration method: [https://support.pix4d.com/hc/en-us/articles/205327965-Menu-Process-Processing-Options-1-Initial-Processing-Calibration](https://support.pix4d.com/hc/en-us/articles/205327965-Menu-Process-Processing-Options-1-Initial-Processing-Calibration)

Regards, Jason.

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**Author:** ![Nikoleta\_Dimopoulou](https://avatars.discourse-cdn.com/v4/letter/n/53a042/32.png) [@Nikoleta\_Dimopoulou](https://community.pix4d.com/u/Nikoleta_Dimopoulou)\
**Post date:** [July 22, 2021, 10:18am UTC](https://community.pix4d.com/t/error-with-cameras/19076/3 "2021-07-22T10:18:40Z")

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Hi @mitchell.pearce,

Can you please share with us the quality report in a pdf format?

Best,

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**Author:** ![mitchell.pearce](https://avatars.discourse-cdn.com/v4/letter/m/0ea827/32.png) [@mitchell.pearce](https://community.pix4d.com/u/mitchell.pearce)\
**Post date:** [July 22, 2021, 8:38pm UTC](https://community.pix4d.com/t/error-with-cameras/19076/4 "2021-07-22T20:38:22Z")

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[210722\_Product\_Stockpiles\_report.pdf](https://community.pix4d.com/uploads/short-url/9VS7BthYQ37tnOKTGPCxUCNCFSQ.pdf) (128.6 KB)

Report attached.

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<div class="post-metadata">

**Author:** ![mitchell.pearce](https://avatars.discourse-cdn.com/v4/letter/m/0ea827/32.png) [@mitchell.pearce](https://community.pix4d.com/u/mitchell.pearce)\
**Post date:** [July 22, 2021, 8:41pm UTC](https://community.pix4d.com/t/error-with-cameras/19076/5 "2021-07-22T20:41:04Z")

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Thanks for the suggestion. I have tried a few different calibration methods. I guess I am more trying to determine why this may be happening. We follow a process with the UAV, post processing, Pix, etc almost everyday, and it typically works perfectly. But in the last few weeks we have had this occur for no particular reason.

Mitchell

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**Author:** ![Jason\_Hagon](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/jason_hagon/32/4800_2.png) [@Jason\_Hagon](https://community.pix4d.com/u/Jason_Hagon)\
**Post date:** [July 22, 2021, 10:07pm UTC](https://community.pix4d.com/t/error-with-cameras/19076/6 "2021-07-22T22:07:18Z")

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Hi @mitchell.pearce having a quick look at your calibration report, it seems the optimised camera parameters are very different to the initial ones used in this project. You can cross reference the initial and optimised camera parameters from a project that was flown with this camera and has calibrated well.

You might want to check/reload the camera parameters from the exif data from the imported images.

You could also turn geometrically verified matching on.

Regards,  
Jason.

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**Author:** ![Nikoleta\_Dimopoulou](https://avatars.discourse-cdn.com/v4/letter/n/53a042/32.png) [@Nikoleta\_Dimopoulou](https://community.pix4d.com/u/Nikoleta_Dimopoulou)\
**Post date:** [July 23, 2021, 12:35pm UTC](https://community.pix4d.com/t/error-with-cameras/19076/7 "2021-07-23T12:35:45Z")

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Hi,

May I ask at which height did you fly? I noticed that the GSD is only 0.02 cm.  
Can you also enable the _Use Geometrically Verified Matching_ option and set _Internal Parameters Optimization_ to **All Prior** and process step 1 again?

Afterwards please share with us the updated quality report.

Best,