05-19-2012, 02:23 AM
Hi Wim
I'm not sure that the fact that PF diminishes with stopping down necessarily indicates there is a lens involvement directly.
As you stop down, I think the angle of the light rays hitting the sensor area changes.
In which case PF could be related to the angle the light hits the emulsion (film) or micro lenses (digital)
So yes, lens settings have an impact on the result, but maybe not due to any flaw.
I wonder if there is any correlation between telecentricity and reduced PF?
I'm not sure that the fact that PF diminishes with stopping down necessarily indicates there is a lens involvement directly.
As you stop down, I think the angle of the light rays hitting the sensor area changes.
In which case PF could be related to the angle the light hits the emulsion (film) or micro lenses (digital)
So yes, lens settings have an impact on the result, but maybe not due to any flaw.
I wonder if there is any correlation between telecentricity and reduced PF?