There is no single best camera in the world,

because the very best (consumer-grade) camera system should have :

- megapixels like a Nokia Lumia 1020 / Kodak Ektar 8x10 format

- pixel quality like a Sigma DP Quattro / Kodak Ektar 8x10 format

- ISO capacitiy like a Sony a7s

- autofocus system like a Canon 1Dx

- still camera FPS like a Nikon V3

- portrait facial tone like a Fujifilm S5 Pro / Kodak Portra 160 NC

- landscape dynamic range like a Nikon D810 / RVP 50

- image stabilization like an Olympus EM-1

- size/weight like a Panasonic GM-1 / Olympus Pen (film)

- hand grip like a Nikon D4s

- video quality like a Canon 5D mark III

- flash system like a Nikon SB series

- lens sharpness like a Carl Zeiss Otus 55/1.4

- lens bokeh like any Carl Zeiss Sonnar lenses

- lens build like any Leica lenses

- wide angle like a Nikkor 14-24mm f/2.8

- tele angle like a Canon 200mm f/2

- popularity like a Canon 5D Mark II

- cost like a Holga SLR

- P:Q ratio like a Seagull TLR

- availability like an iPhone 5s

- photographer's mind like Pakho Chau