For those who are considering the above lens as a standard walk around lens here are some simple comparision of the 3 lens above for centre and corner sharpness.
http://community.webshots.com/album/195634918mvJAbD
Total of some 36 photos, information of the photos are the title itself.
eg, the first 2 shot shows both the 18-70 and the 18-125 taken at 18mm and follow by centre and corner crop etc.
I will not go into details.
In short the Nikon 18-70 lens is still better in all ranges and aperture especially corner sharpness. 24-120 only advantage is VR and is soft at wide and corner as well. One other thing is that the Sigma 18-125 display a little warmer colour than the other 2 lens. Can't tell much as I do not have a calibrated monitor.
So for those thinking of selling the 18-70 better think twice.
http://community.webshots.com/album/195634918mvJAbD
Total of some 36 photos, information of the photos are the title itself.
eg, the first 2 shot shows both the 18-70 and the 18-125 taken at 18mm and follow by centre and corner crop etc.
I will not go into details.
In short the Nikon 18-70 lens is still better in all ranges and aperture especially corner sharpness. 24-120 only advantage is VR and is soft at wide and corner as well. One other thing is that the Sigma 18-125 display a little warmer colour than the other 2 lens. Can't tell much as I do not have a calibrated monitor.
So for those thinking of selling the 18-70 better think twice.