Lens focus issue
I am currently using a nikon d700 with a nikon 400mm 2.8 af-i lens. the lens will not focus correctly, it just drifts and will not lock onto anything. i put it on my d300 and it works perfectly. if i put my teleconverter on with the d700 it works perfect as well. Don't know what the issues is. Any help would be greatly appreciated! Thanks!