# coordinate system

**URL:** <https://community.pix4d.com/t/coordinate-system/4177>\
**Category:** PIX4Dmapper Questions/Troubleshooting\
**Created:** [October 24, 2017, 2:54pm UTC](https://community.pix4d.com/t/coordinate-system/4177 "2017-10-24T14:54:23Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![YUNUS\_EMRE\_FIRAT](https://avatars.discourse-cdn.com/v4/letter/y/77aa72/32.png) [@YUNUS\_EMRE\_FIRAT](https://community.pix4d.com/u/YUNUS_EMRE_FIRAT)\
**Post date:** [October 24, 2017, 2:54pm UTC](https://community.pix4d.com/t/coordinate-system/4177/1 "2017-10-24T14:54:23Z")

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can anyone tell me why this happen and what is the solution?

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**Author:** ![YUNUS\_EMRE\_FIRAT](https://avatars.discourse-cdn.com/v4/letter/y/77aa72/32.png) [@YUNUS\_EMRE\_FIRAT](https://community.pix4d.com/u/YUNUS_EMRE_FIRAT)\
**Post date:** [October 25, 2017, 4:55am UTC](https://community.pix4d.com/t/coordinate-system/4177/2 "2017-10-25T04:55:22Z")

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my image geolocatiom WGS84(egm96). GCPs are ITRF96 TM33, what should be vertical system in these parameters?

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Thanks

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**Author:** ![Martin\_Meyer](https://avatars.discourse-cdn.com/v4/letter/m/2bfe46/32.png) [@Martin\_Meyer](https://community.pix4d.com/u/Martin_Meyer)\
**Post date:** [October 26, 2017, 1:13pm UTC](https://community.pix4d.com/t/coordinate-system/4177/3 "2017-10-26T13:13:08Z")

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Hi Yunus,

i am using an DJI Phantom 4 and this looks similar to my camera positions. I have read in a forum article that there is a problem with the EXIF information. The difference between measured and computed cameraposition should not affect the quality of your results. This is what someone of the support answered in the forum article and that is also my opinion. The GCP coordinate system can’t be the reason for this problem.

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**Author:** ![Martin\_Meyer](https://avatars.discourse-cdn.com/v4/letter/m/2bfe46/32.png) [@Martin\_Meyer](https://community.pix4d.com/u/Martin_Meyer)\
**Post date:** [October 26, 2017, 1:51pm UTC](https://community.pix4d.com/t/coordinate-system/4177/4 "2017-10-26T13:51:04Z")

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flight height: 40m and 60m (different days)

flight height: 40m and 90m (same day)

Here two examples…

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**Author:** ![YUNUS\_EMRE\_FIRAT](https://avatars.discourse-cdn.com/v4/letter/y/77aa72/32.png) [@YUNUS\_EMRE\_FIRAT](https://community.pix4d.com/u/YUNUS_EMRE_FIRAT)\
**Post date:** [October 26, 2017, 2:38pm UTC](https://community.pix4d.com/t/coordinate-system/4177/5 "2017-10-26T14:38:22Z")

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thanks a lot Martin…