Unlike him, I decided for the 18-135mm IS.
My reasons are: greater focal range than the 15-85mm, the weight and even the price.
Also I was interested, not having to constantly switch. Found the limit of the kit lens 18-55mm
I also very disturbing. Where the 18-55mm straight in comparison to other Canon lenses with respect
the value for money offers a lot (pretty good in the macro area), and also it is very easy.
At a wedding I had borrowed the Canon EF 50mm 1.4 USM, which and in terms of light intensity
Color contrast is great! The 50mm correspond to a real 80mm Canon 450D, which means you have quite
keep moving and can not be positioned wherever you supposed to be !!
However, the autofocus of the 50mm 1.4 USM is much slower than that of the 18-135mm IS, although the latter
no USM lens. Which I thought was surprising.
Conclusion In my opinion:
Positives: metal bayonet lock, faster and more accurate autofocus
(Which I just can not say from my Tamron 18-200mm);
large focal length range; very ordinary stabilization performance (!); passable processing.
Negative: not easy; generally relatively strong vignetting (especially with 18mm);
very strong barrel distortion at 18mm;
Fringing on high contrast edges are sometimes quite pronounced.
For me, the 18-135mm IS lens as universal ("Always top") is well suited. I want neither too often
need to change, nor lugging around too much weight, nor a fortune in various fixed focal lengths
or L-Zoom Lenses invest. Post the images is called for because of the distortion and vignetting.
Who needs often images in A3 format (or greater) with high image quality, needs to fixed focal lengths
or think of the approximately 3 times as expensive L-zoom lenses.
Addendum: based on the recession of Winkler Falk:
"Not easy" I meant in terms of the kit lenses, ie relatively much weight for so much plastic.
I once had the Canon EF 70-200mm f / 4 L IS USM tried a super thing !! Weighs just almost 800g and costs
about NEN 1000. For me, too expensive and ultimately too difficult because it is not the only objective in your pocket.
However, I do not think that is the lowest priced plastic 18-135IS: it is a bit better than the processing of 18-55mm and 55-250mm IS, nothing more. The images produced my copy,
I do not consider mushy! Eben acceptable. But the vignetting is too strong, I think so too.
The price may be lower, that's right. But in general, I believe that all DSLR lenses
(With the possible exception of the Kit-objects) are priced much too high!
You consider yourself times: for about 400 euros to get a desktop PC!
