Computational photography.
Too complex to describe (by me) so here is what DPR says.
https://www.dpreview.com/articles/9828658229/computational-photography-part-i-what-is-computational-photography
Computational photography part I: What is computational photography?
https://www.dpreview.com/articles/9828658229/computational-photography-part-i-what-is-computational-photography/2
Stacking: 90% of success of mobile cameras
https://www.dpreview.com/articles/0681063194/computational-photography-part-ii-computational-sensors-and-optics
Computational photography part II: Computational sensors and optics
I took some close-up photos of Mariposa Lilies at the fixed f/1.8 iphone setting and lo, I got depth of field that should NOT accrue to an f/1.8 lens. And with older model phones.
Also, love the flower photos. That's what enticed me to go down this path some 55 years ago.
I still use big and powerful cameras as well, and wait for the breeze to calm down.
I don't use focus stacking on them. Next iteration of my photography, as in processing RAW data.
The jpegs are gorgeous already.
Keep up the great work. (fun) 
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