Hey neighbors! At this time there are no lens adjustment toggles beyond the devices that may have the HDR toggle. The HDR feature could certainly optimize image quality, but it likely would not resolve a background light exposure concern. This is best resolved through physical alteration such as angling the Doorbell differently or mounting it elsewhere.
Environmental concerns can be tough to resolve for a recessed or enclosed entryway. While the lens is designed to automatically adjust to an area and the illumination of it, some mounting or lighting scenarios can make this difficult. As Video Doorbells are intended to cover your entryway, we see many neighbors add a second Camera beyond their entryway for the best coverage in and outside of the entryway. I hope this helps! 