I am a first time user of Nikon products. I know this may have been discussed already in this mail grp. But since, I just joined I have to play catch up. Can somebody tell me what is the difference between these types of lenses? Which lens are best suited for a N90S, N70 camera with SB28 flash? If I use third part lenses will I be at a disadvantage? I plan to use these cameras for Portraits, Nature/Landscape, Night photography. Thanks for your inputs K
