[VinnyP]

Wow you just about need every lens there is to cover that landscapes need wide, families standard and wildlife the long stuff. Don't worry though you are not alone and there are a lot of possibilities.

Always the biggest question is budget. You can spend a lot of money on lenses but if you are new to the photography world or even for those of us who are are not, then getting the most out of the equipment you have is very satisfying and a good learning experience. The 28-200 will cover most of your needs but could do with being a little wider. Quality for the long haul is a tough question since it's unlikely one lens will cover all your needs except possibly the Nikon 18-200 VR but that has a big overlap with your existing lens and compromises in a few areas to be a jack of all trades. For family photos and landscapes then a good quality constant 2.8 standard zoom would see you right. The Sigma 18-50 2.8 is very good and great value, the best for Nikon is the 17-55 2.8 if you want that little bit extra (unfortunatley not for just a little bit extra money). You could use the 28-200 for wildlife; but you may find you want more reach. Just as an aside a 50mm 1.8 is incredible value and a great family lens but not so versatile as the zoom and the focal length is already covered by the 28-200.

Really to cover your needs though at least 2 lenses should be in your future. Most cameras these days are available with a kit of 2 lenses usually around a 18-70 and a 70-300. This is a good range to cover and deals with 90% of most shooting requirements. The Nikon kit lenses are better quality than most (and often available on Ebay) but are buit to a price. Better options exist but they cost more. I'd start with a wider 2.8 zoom and if you have money left over then a 70-300 or 80-400 might take your fancy.