@ Lenslut hope brother can catch some ball
AF-D lens is non built-in SWM, but still able to works with screw driver motor on body.
But coating wise is made for film day an not as rich as G coating lenses and limited of performance as higher MP such as D800 and above, cause the IQ not as good like HD photo quality.
If when to G Lenses has built-in SWM on lens only, even non screw drive on body an still working on SWM.
The coating has newly design to suit new technology and more rich color with improved over the film camera.
But except some AF-G lens is without aperture ring and label as G and still work as screw drive.
The image quality as good, but still not meet to AF-S lens.
Cheers!
Actually, you are not correct rain5533.
There are some D lenses out there that have SWM motor.
And there are some AF-S lenses out there that are not G lenses.
And some AF-S G lenses do not perform as well as the Ai, Ai-S and AF-D versions.