Nikon 85mm f/1.4, "D AF" or "AI-s" ? difference?

[alexandroff]

does anyone know of any optical difference between
"D AF"
http://www.kenrockwell.com/nikon/8514AF.htm

or

"AI-s"
http://www.kenrockwell.com/nikon/85mm-f14.htm

Nikon 85mm f/1.4 lenses?

kenrockwell states that the AF one is optically inferior? what does it mean?

--

(i'm not talking about obvious manua/auto focus difference, or filter size; rather more on the optical quality end; i'm shooting video on D90)

 

[mattsand]

it means it's not as good. they are both very good though so i very much doubt there's any real difference when shooting video, i'd be more concerned with manual control, for which the ai-s is obviously a much much better choice.

/matt

 

[ThirstyRoadrunner]

I believe optical inferior usually means that a lens when wide open and light is passing through most the lens there is some scatter and the image might be softer around the edges. That is what I seem to recall from photography 101!

 

[mattsand]

it can mean many things. resolving power, corner sharpness, vignetting, coma, chromatic aberration and more are some of the results of inferior glass, the reasons are millions.

/matt

 

[artforme]

I got the 105mm 1.8 ais. And its pretty awesome.

Of course auto focus would be nice to have sometimes though when wanting to take pictures on the fly. But for straight up video needs, the ais should be wonderful.