"Camera fixes" are available for some phones with limitations or camera related bugs. Some unlock bigger resolutions, others minimise dot patterns, etc.
On this site I host the fixes created by other modders for the following devices:
- OnePlus 3 and 3T fix
- OnePlus 5 and 5T fix
- Realme 2 Pro fix
- Xiaomi Mi A1 fix
- Xiaomi Mi A1 - Red Hot Camera Module
- Xiaomi Redmi Note 4X
- Zenfone Max Pro M1 fix
This isn't a complete list of fixes available. Visit XDA-Developers subforum for your phone to see if one exists for your device and what it does.