ok I am new. I bought a d 40 back at easter well a guy i work with said he had some of his dads ld nikon stuff. here is a list 28-70 50mm f1.8 70-210 100mm 1:2.8 vivitar flash nikon fm2 (camera) tele converter small tri pod light meter 2 soft cases 1 metal case 2 point and shoot 1 polroid the lens are all vivitar i bought all this for a 100.00 bucks. I was told that all nikon lens work with my d40 however when i connect the lens the camera says lens not attched in manual mode i can take pictures but have to set the apeture manually will these hurt my camera at all. I know i got deal would i best to keep it and learn how to use these lens or would i be better to sell it and get glass that would fit and work with me camera?