This lens adjustment can happen when mounted in an enclosed area that lets in some light. Adjustment can vary by environment, amount of lighting, time of day, and even time of the season.
Facing the Video Doorbell mostly towards the light is a great step that I see you’ve accomplished here. In some cases, different surfaces and dimensions in view will make the lens adjust the best it can to the most visible or brightest spots. Adjusting mounting angle, or mounting beyond these environmental features can help.
Adding a Ring Camera is always another option, as it can be mounted up high to, often times,
capture more area beyond your entry way. Check out Ring.com for deals!