I have to do a session tomorrow and I was going to use my standard setup: 85mm AIS/1.4 (big honker) on either my F3 or F4. Someone lent me an F5 which I have been using, and frankly I like the F4 better for some odd reason when using manual lenses (all I have). With the loaner F5 came an AF Nikkor 85/1.8. Its plastic, but what about the optics? Are they better than the AIS 1.4? I am voting for the old school, metal-built 85 AIS 1.4. Would others agree?