In the field of optics truely holds: you can’t have the cake and eat it

Various features of lenses for example Depth of Field and F-Number contradict …

Depth of Field vs. F-Number

Depth of Field vs. Resolution

Vignetting vs. Distorsion
Quality vs. Price
There’s a natural lower limit for the lens price
Cost Driver  No. 1 : low F-number

Cost Driver  Distorsion

Cost Driver Resolution