I don't know if this info is available somewhere else on this site, but I found a very useful resource. I buy many old ai and ais lenses online and often they come without a lens hood. In the past, I had to research to find what lens hood goes with the lens then I found this great resource. This is a list of many old and new lenses and what lens hood goes with each lens.
Edited by Justin_Sharp, 07 June 2015 - 03:19 PM.