Last weekend I took some photographs with my Nikon D800 and the Sigma 18 - 35mm f1.8 lens. It was just a quick play around and there was no intention to carry out any testing on the lens. I haven't used this lens/ camera combination previously. I normally use that lens on my D300 or D200.
I posted a link to some photographs on the blog yesterday. I was asked to photograph a flat surface at ISO 100 and at f10. I have done this.
For those interested here are the links to the photographs on Flickr: -