As you are willing to consider the AF-S DX NIKKOR 18-200mm f/3.5-5.6G ED VR II, may I suggest that you look at what users have to say about the non-Nikkor Tamron AF 18-270mm f/3.5-6.3 Di II VC LD Aspherical (IF) MACRO.
- “The Tamron is noticeably sharper than the Nikon in the majority of focal length / aperture combinations, except at the telephoto end (200mm) where both lenses produce similarly average results.”
- “It [the Tamron] the stands up well in comparison to both the Nikon 18-200mm F3.5-5.6G ED VR and the Canon EF-S 18-200mm F3.5-5.6 IS; it's softer than the Nikon at wideangle and the Canon at telephoto, but beats both in that mid-range.”
Here's a user discussion of the Nikon 18-200 and Tamron 18-270
Semi random comments from there include:
- I have been using the Tamron 18-270 for about four months but on a D300 instead of a D90 and so far I have been pretty pleased with it. My only complaint with the lens is that when zooming from wide angle to tele it is stiff when crossing the mid-range. It bothered me some initially but now I've gotten used to it and seldom notice it. I have also noticed some CA at the 270 end but it seems to go away as you stop down past f8.
Here are 33 reviews of the Minolta / Sony A mount version . (This is for the slightly older 18-250 as there are more reviews - the 18-270 is about the same)
User ratings out of 5. Anything over 4 is respectable for a very wide range lens.
overall ratings: 4.36
sharpness rating: 4.44
color rating: 4.61
build rating: 4.33
distortion rating: 4.03
flare control: 4.39
3 x 18-270 reviews
I have the Sony SAL18250 = Tamron 18-250 with Sony mods to AF drive ratio and aperture blade shape. I find it a superbly useful walk-around lens. The biggest criticism made by many people is its slowish AF. Some say it cannot be used for sports, birds in flight etc. It can. You have to work at it more than some and learn to understand what it can do but, for the price, it's very good indeed.
Picture SAL18250 = Sony 18-250 mm version - made by Tamron.
Shags: 1/90s, f/8, 210mm (APSC actual), Sony A77 with antishake.
Hand held - limitations are probably more caused by my focusing and hand shake than lens. Full res version gives a better impression.
Full resolution out of camera version here.
Useful review - Tamron plus a range of other longer zooms Canon focused but gives some good comparative results.
The lenses named below are compared to the Tamron.
Canon EF-S 15-85mm f/3.5-5.6 IS USM
Canon EF-S 18-55mm f/3.5-5.6 IS
Canon EF-S 18-135mm f/3.5-5.6 IS
Canon EF-S 18-200mm f/3.5-5.6 IS
Sigma 18-125mm f/3.8-5.6 DC OS HSM
Sigma 18-200mm f/3.5-6.3 DC OS
Sigma 18-250mm f/3.5-6.3 DC OS HSM
Tamron 18-200mm f/3.5-6.3 XR Di II
Tamron 18-270mm f/3.5-6.3 Di II VC