obtain camera focus the amount of direction...

... Wine Glasse's ....................... AM v8 Vantage ...

**note: to obtain view camera focus the amount of direction from the lens causes sharp detail, both rules must be obeyed establishing a consistent standard of sharpness when using a different number of lense's.
I've got to pre-empt on this iconic image that was questionable to create and contribute to the science behind it, the concept excecution failure is my success.