Here is a response from Wyze founders:
Q: The WYZE OG looks washed out compared to the V3 will there be a firmware to correct this and will there ever be a setting in the app where we can make CONTRAST and BRIGHTNESS adjustments ourselves like POE cameras can do
A: The current IQ on the firmware of Wyze Cam OG is a little bit brighter than Wyze Cam v3. Image quality is a delicate balance, where Wyze Cam OG is currently doing better in high-contrast areas, but slightly a bit brighter in well-lit areas. For Wyze Cam OG, we are still fine-tuning the image quality and you can expect some updates in the upcoming firmware. u/WyzeDS
You can find all kind of info in this post: