How can i set camera exposure to accurate 18%？

[YaoDaDi666]

Hello，i use this tool for icvfx color calibration many times but never get good result.i use novastar led processor which support PQ,and redRaptor 8k vv camera.First i generate the pathch from openvpcal then i play the dpx sequence on led screen use pr,i got the video from red camera ,finnaly i use davince to convert the red video to exr sequence,but every time i got some error and sometime its diffrent.do you have discord or facebook grroup,where can i communicate with other openvpcal user,thanks

[YaoDaDi666]

[YaoDaDi666]

[YaoDaDi666]

[YaoDaDi666]

[giardiello]

hello @YaoDaDi666 , happy to support. If your pipeline is in PQ, you should select ST 2084 in the dropdown menu of the target EOTF.

[YaoDaDi666]

hello @YaoDaDi666 , happy to support. If your pipeline is in PQ, you should select ST 2084 in the dropdown menu of the target EOTF.

thanks for your support,the camera record is set prores4444xq uhd RAW/Log3G10,then i input the video on Davince to convert it as exr sequence,is the workflow is right?