tcthome wrote:
On my Nikon MC 105 G IF ED 2.8 lens stops down to f-3.2 when at minimum focus distance of 11"so maybe ??? If I back up say to eg., 18-24" it will open up to the f-2.8.
That is also what happens with my Nikon 105 macro, max aperture 'indicated' varies between MFD and Infinity. That is due to Nikons indicating the difference between 'actual' and 'effective' aperture.
But I'm not sure or have not noticed this on any of my non macro lenses.