I am looking to purchase a super wide angle lens and have narrowed my choices to Nikkor 18mm f/2.8 and the zoom Nikkor 17-35mm f/2.8. I have the zoom Nikkor 28-70mm f/2.8, so I am looking for a wider view. I know the 17-35mm provides greater utility and costs a little more. I tend to shoot scenic landscapes and some cityscapes. Can anyone provide helpful insights form their experiences? Iâ€™ve heard that the 17-35 is razor sharp, but I have not heard much about the 18mm.