"List previously saved AF tuning values. If you are using more than one lens of the same type, you can add an identifier to the lens name (for example, the last two digits of the lens serial number)." --Nikon NPS
I could swear I once had two AF 28-70/3.5-4.5D Nikkors listed in with my D800. Now I have a pair of these again as well as two AF 35-105/3.5-4.5D Nikkors. Generally I'll keep one each with my D800 and also one each with my D300. If I carry both cameras I've got a problem as these lenses require slightly different AF fine tuning.
I thought the firmware in lenes encluded the lens serial number. Now that I'm guessing the firmware does not include the lens' serial number. I haven't found any information regarding this issue. I hope someone can enlighten me.
Dave