The old cam is the Amcrest UltraHD 4K (8MP) Outdoor Bullet POE IP Camera, 3840x2160, 131ft NightVision, 2.8mm Lens, IP67 Weatherproof, MicroSD Recording, White (IP8M-2496EW-28MM) which according to specs has a 112 degree horizontal view angle and 0.06 Lux/F1.6(Color,1/3s,30IRE) 0.3 Lux/F1.6( Color,1/30s,30IRE) low light rating. And went for about $110 new.
The replacement is the Reolink PoE Camera 5MP Super HD 4X Optical Zoom Outdoor Indoor Video Surveillance Work with Google Assistant, IP Security IR Night Vision Motion Detection with Phone App RLC-511 which claims a 90 degree horizontal view angle but give no low light info other the 0 Lux with IR on. And as I'm writing this is going for $71 on Amazon.
First at high noon. You can see the view is a bit wider in the Amcrest though not as clear. Especially in the shadows. Note the white dog in the Amcrest shot is not easier to see than the black dog in the Reolink shot.
|Amcrest at noon|
|Reolink at noon|
|The Amcrest zoomed in. Note the black dog behind the white one. You might not even notice it if not looking for it.|
|Reolin zoomed in a bit more than the Amcrest. The black dog is almost the same spot as in the Amcrest shot though facing the other way.|
How about an early morning shot just as the cam flips to color mode? In this one it is a tougher call but the Amcrest might be a bit better.
|Reolink early morning|
|Amcrest early morning|
|Amcrest IR shot. White dog in front of tree.|
|Reolink IR shot. White dog on walkway near IR flood.|