# Odd behavior at Initial processing **URL:** \ **Category:** PIX4Dmapper Questions/Troubleshooting\ **Created:** [August 26, 2020, 2:54pm UTC](https://community.pix4d.com/t/odd-behavior-at-initial-processing/14311 "2020-08-26T14:54:41Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![inuk](https://avatars.discourse-cdn.com/v4/letter/i/ed655f/32.png) [@inuk](https://community.pix4d.com/u/inuk)\ **Post date:** [August 26, 2020, 2:54pm UTC](https://community.pix4d.com/t/odd-behavior-at-initial-processing/14311/1 "2020-08-26T14:54:41Z")
Hi, Can someone suggest what might have caused this behaviour shown in the attached images? Initial camera positions (blue) are fine, but some calibrated cameras (green) have grouped together in a ball. ![image](https://global.discourse-cdn.com/pix4d/original/2X/c/c6ca4330a7ab32452b8ce011f1e3fce71926e365.png) I am redoing the initial processing to see if I can repeat the behaviour. I have flown this exact same spot previously and generated orthophotos without this problem, so it should not be related to photo/camera content. Inuk ---
**Author:** ![inuk](https://avatars.discourse-cdn.com/v4/letter/i/ed655f/32.png) [@inuk](https://community.pix4d.com/u/inuk)\ **Post date:** [August 26, 2020, 5:07pm UTC](https://community.pix4d.com/t/odd-behavior-at-initial-processing/14311/2 "2020-08-26T17:07:02Z")
I’ve tried the **Internal Parameter Optimization to AllPrior** options suggested in other posts, but even worse results were obtained. ![image](https://global.discourse-cdn.com/pix4d/original/2X/9/98aed59254ca83bf3501c1bec84f317faafc0d2b.png) Inuk ---
**Author:** ![momtanu.chakraborty](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/momtanu.chakraborty/32/269_2.png) [@momtanu.chakraborty](https://community.pix4d.com/u/momtanu.chakraborty)\ **Post date:** [August 26, 2020, 7:13pm UTC](https://community.pix4d.com/t/odd-behavior-at-initial-processing/14311/3 "2020-08-26T19:13:11Z")
Inuk, We would need your p4d file and quality report to help troubleshoot. Thanks!