Dec 24, 2008, 16:53
I exchanged my Sigma 18-200 for the Sigma 18-200 OS version with a real improvement in sharpness and definition in my bus window photos. I hope you agree.
![[Image: womenbabySM.jpg]](http://www.shuttertalk.com/forums/images/upload/womenbabySM.jpg)
![[Image: boothwomanSM.jpg]](http://www.shuttertalk.com/forums/images/upload/boothwomanSM.jpg)
![[Image: manneardoorSM.jpg]](http://www.shuttertalk.com/forums/images/upload/manneardoorSM.jpg)
![[Image: 80_cornerSM.jpg]](http://www.shuttertalk.com/forums/images/upload/80_cornerSM.jpg)
Nikon D3100 with Tokina 28-70mm f3.5, (I like to use a Vivitar .43x aux on the 28-70mm Tokina), Nikkor 10.5 mm fisheye, Quanteray 70-300mm f4.5, ProOptic 500 mm f6.3 mirror lens. http://donschaefferphoto.blogspot.com/