Chosen Solution

I smashed the internal lens of my go pro session 4. I have taken it apart and don’t know where to purchase the lens assembly. I figured the lens assembly and sensor will need to be purchased together because the lens is glued into the assembly probably for focusing. I was able to get it screwed out but figure there will be no way to refocus it with a new replacement….

I was wondering also if one of the two will work since the sensor size is supposed to be the same: GoPro Hero Lens [linked product missing or disabled: IF300-109-1] I am about to receive a cracked lens Hero Session and will followup with what I find. You should be able to refocus by using a calibration target to make sure image lens is screwed to correct position for proper focus, then maybe hot glue in place: http://www.vision-doctor.com/en/line-sca