#10. "RE: Difference Between D50 and D40 , D40x" In response to In response to 3
I use AF lenses from Nikon, Tokina, Tamron, Sigma, Quantaray and some manual lenses from Vivitar, Soligor and various Korean brands. The electric contacts on the rear of the lens come in three varieties; one is the AF for D50, 70, 90 etc which is in the pattern . .....; one is the pattern for D40, 40x, 60, 3000 etc ........... and mostly have plastic mounts and will also work on the D50,70,90 etc. No electric contracts mean it is manual focus; many of them will work on the D50 in manual focus/manual aperature mode only.