JakeB: Superzooms -- for those who don't give a hoot about IQ.
I have a 18-200 used on my D300s. Its a ok general purpose lens, but its really not that sharp. I recently bought a Nikkor 24-70/2.8 for use on my D800..now that one is pretty darn sharp. I have a 70-300vr 4.5-5.6 and a 150-500 f5-6.3 for longer end, and a 12-24 for wide angle mainly on the D300s (=18-36 on the crop camera). If you are going to print large you need sharp. Super zooms such as the 18-200 or 18-300 are generally not that sharp.
Keith Aitken: If Nikon's 18-300 has the same IQ as the 16-85, it will be excellent ( should be for $1000 ), but the Tamron 18-270 PZD is an absolutely superb value : excellent IQ, very efficient VR, min focus down to about 12 inches at 270mm, delightful bokeh, capable AF ( even at 270mm ).
Yes, it goes beyond f/5.6 to f/6.3 after about 100mm, but the light weight and compactness make the 18-270 an ideal one-lens travel or every-day solution, at a great price.
Nikon may find it tough to break into an already-existing market at this price, although I don't doubt that the quality will be there.
The Tamron will focus down to 1.61', or about 19". F6.3 imo is not a good thing. You will likey have to stop down to at least f8 to f10 to get best possible sharpness, since most every lens is not at its best wide open, and f6.3 would be wide open for that lens at telephoto. $1000 is really not a high price for a lens, although it is a lot of money.Heres specs on the Tamron http://www.bhphotovideo.com/c/product/581247-REG/Tamron_AFB003NII_700_18_270mm_f_3_5_6_3_Di_II_VC.html
JacobMichelsen: Don't understand the following:"The 18-300mm offers the highest ever zoom ratio for a Nikon interchangeable lens, giving a 27-450mm equivalent range on one of the company's DX-format cameras."If is is a DX lens, then using it on a DX-format camera will give 18-300mm, ie no magnification.
Incorrect. It will be equivelent to 27-450mm whether it is a dx or fx on a 1.5 crop sensor camera. The downside of a dx lens is it will not utilize the entire sensor if you put it ona FX sensor camera such as a D700, or D800. It effectively crops the image. You can use a FX lens on a Crop sensor camera with no drawbacks. The smaller sensor will use the center area of the lens. This can be advantageous sometimes since the center of the lens is usually the sharpest area. I have 3 Nikons, a D80, D300s, and a D800, and half a dozen lens's including a couple DX lens's. The 18-200 is one of them.