My prime nikkon lenes of the 70's & 80's, most of which are AIS lenses ranging from 28 to 300, are worth pennies to the dollars on trade in value---that has been the case for a good number of years and the value has been decreasing. Yet with the advent of the new mirrorless 4/3 camera systems, am I correct in stating that values of these older lenses are going up in value??? is this correct?? Please explain. I heard this from a Nikon source---not that it is going to change my mind about turning in these lenses/bodies for pennies to "clear house". Turning in these Nikon F2's & this Nikon glass is so painful---I had to rob the bank to buy these items over the years. R.