If I transition from semi-pro to pro I am thinking of picking one of those up because the 300mm lens is the equivalent of a 600mm and good for taking pictures of birds but fits in a reasonable backpack. Built in focus-stacking is another advantage over my Sony.

https://www.digitalcameraworld.com/tech/android-phones/xiaom...

Lagniappe: https://youtube.com/shorts/shLpGFTQeNQ