I used to have one in the film days and it performed exactly as a 20mm on 35mm film should perform. It's a seriously old design now - I probably bought mine in 1991 when it would have just been AF but I don't think the optical design changed when it became AF-D and may not have changed going from AIS to AF.
Jonathan
I've just got one (af-d) but mine is on a FF (D700) thou - you might be better off going for a new 35mm af-s which I would imagine is a fair bit cheaper new than a used 20mm AF-D...
As the 20mm on a cropped camera would give you about 32mm.... Althou the two would AF on your D7000...
davep90 said:Interesting stuff thanks for the replies. I didn't realise there was a new version I'll go look...
That's not right, 20mm on a cropper would give the same field of view as 30mm on FF, the 35mm DX on a cropper has the same field of view as a 52.5mm lens would on FF.
I've just sold my 20mm AF on here, excellent lens on FF and only really selling as I found that I need the flexibility of a zoom at the wide end, a few mm makes such a difference to perspective.
Its a 2mm difference John & I did say that it was "about" 32mm (as I went on the basis of a crop sensor being 1.6 & not 1.5 - as couldn't remember which one the Nikon was)... 
Ahh correction I have the 35 I thought you meant a new 20
Its a 2mm difference John & I did say that it was "about" 32mm (as I went on the basis of a crop sensor being 1.6 & not 1.5 - as couldn't remember which one the Nikon was)...
Also it was me that brought your Nikon 20mm AF-D
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Mine was an AF, not AF-D, and I'm sure I posted it to someone else today![]()
Virtually the same name - well initials anyway 
)Trig - get yer eyes tested! (how can you forget me so soon - I feel used)
