Its the non-AI that won't work with the DSLRs. AI or AIS will work on most, with the exception of a few models like the D40 that won't accept them.I was under the impression that the AI lens couldnt be used on digital and that they had to be converted to AIS or am I mistaken?
Quick clarification -- the AI and AI-S lenses won't meter on the consumer bodies like the D40, D40x, D60, D70, D80, and D90 -- but they will all mount fine. On bodies like the D200, D300, D700, D3, etc. they will meter in M and A modes.Its the non-AI that won't work with the DSLRs. AI or AIS will work on most, with the exception of a few models like the D40 that won't accept them.
Ah... Got it.
A side question, do the AI and AIS lens differ optically? Also from what I can gather used on a D200 in M mode I would not see a difference in performace per say, save for a possible sample issue?
The optical formula stayed of the same proven design. However, the Ai-S has different front coating (pink-purple like) from the Ai version (the older Nikon greenish appearance), which somewhat improved its performance.as far as i know, the AI and AIS are optically the same